Timezone converter

PST to MST Converter.

PST → MSTGap: +1h7h 9-5 overlap

PST to MST currently uses Pitcairn Time in America/Los_Angeles and Mountain Time in America/Phoenix as the live reference pair, with a +1h live gap. PST to MST matters whenever Los Angeles and Phoenix need to coordinate across a +1h gap. The PST side covers United States and Mexico, while MST covers United States and Mexico — that country mix is the practical reason this conversion shows up in calendars rather than the abstract offset math.

Offset math, DST behavior, and city coverage on both sides are refreshed from the live timezone dataset during the page revalidation window.

From

PST

Pitcairn Time

America/Los_Angeles · PST -08:00

--:--:--

Major markets in this grouping include Los Angeles, Tijuana, San Diego, Mexicali.

To

MST

Mountain Time

America/Phoenix · MST -07:00

--:--:--

Major markets in this grouping include Phoenix, Ciudad Juárez, Calgary, Edmonton.

Scheduling snapshot

Current gap

+1h

PST -08:00 vs MST -07:00

9-to-5 overlap

7h

PST 9:00 AM previous day to 4:00 PM previous day

Representative countries

United States, Mexico, and Canada / United States, Mexico, and Canada

Based on the busiest city and zone usage found in the current dataset.

Pair context

PST (Los Angeles, -08:00) to MST (Phoenix, -07:00) is currently a +1h conversion. Live coverage on the PST side is anchored by Los Angeles, Tijuana, San Diego, and Mexicali; the MST side draws from Phoenix, Ciudad Juárez, Calgary, and Edmonton.

PST to MST matters whenever Los Angeles and Phoenix need to coordinate across a +1h gap. The PST side covers United States and Mexico, while MST covers United States and Mexico — that country mix is the practical reason this conversion shows up in calendars rather than the abstract offset math.

Both reference zones sit inside America, so this is a regional comparison rather than a long-haul conversion. The gap of +1h mostly affects intra-continental travel, regional logistics, and America-wide calendars.

PST follows seasonal clock changes through America/Los_Angeles, while MST stays on a fixed offset year-round. That asymmetry is the real differentiator on this page: the gap widens or narrows by an hour twice a year, so calendar invites scheduled in one season often look wrong in the other.

PST and MST sit exactly 1h apart, leaving a generous 7h of shared 9-to-5 time. With that much overlap, this pair behaves almost like a single workday, so meeting times are negotiable rather than forced into a narrow corner of the calendar.

Pair details

Reference zone, current offsets, country and city anchors, overlap math, and date-shift answers for PST to MST.

Reference pair

America/Los_Angeles -> America/Phoenix

Live offsets

PST -08:00 vs MST -07:00

Meaning split

Pitcairn Time / Mountain Time

Country anchors

United States, Mexico, and Canada -> United States, Mexico, and Canada

City anchors

Los Angeles, Tijuana, San Diego, Mexicali -> Phoenix, Ciudad Juárez, Calgary, Edmonton

Workday overlap

7h window: PST 9:00 AM previous day-4:00 PM previous day

Morning answer

9 AM PST = 10:00 AM MST, same day

Evening answer

6 PM PST = 7:00 PM MST, same day

Calendar and scheduling context

Same-offset labels can share the same hour while still landing in different countries, calendars, cities, and workday windows. These notes show the practical context behind this conversion.

Exact pair identity

PST to MST is pinned to America/Los_Angeles -> America/Phoenix, with the shorthand labels shown as context. The city anchors are Los Angeles, Tijuana, San Diego, Mexicali on the PST side and Phoenix, Ciudad Juárez, Calgary, Edmonton on the MST side, with +1h between the live reference zones.

Civil calendar differences

The 12 popular-hour answers include 12 same-day conversions, 0 next-day conversions, and 0 previous-day conversions. That distribution is what separates this page from a static offset chart.

Same-offset caution

Nearby labels sharing a current offset include PDT (From side), MDT (To side), GMT-7 (To side), YT (To side). They may match mathematically, but their country calendars, city anchors, and common search intent differ from this exact pair.

Jurisdiction evidence

PST: United States (US); 616 mapped cities; capital Washington, D.C.; English; USD United States dollar | PST: Mexico (MX); 16 mapped cities; capital Mexico City; Spanish; MXN Mexican peso | PST: Canada (CA); 107 mapped cities; capital Ottawa; English, French; CAD Canadian dollar | PST: Pitcairn (PN); 1 mapped cities; capital Adamstown; English; NZD New Zealand dollar | MST: United States (US); 187 mapped cities; capital Washington, D.C.; English; USD United States dollar | MST: Mexico (MX); 1 mapped cities; capital Mexico City; Spanish; MXN Mexican peso | MST: Canada (CA); 34 mapped cities; capital Ottawa; English, French; CAD Canadian dollar

Pair fingerprint

Offset behavior, DST gap changes, local calendar evidence, and the day-shift pattern across the most common conversion hours.

Offset behavior class

PST/MST is a short-haul offset gap: America/Los_Angeles currently reads -08:00, America/Phoenix reads -07:00, and the live delta is +1h. This class decides whether the page behaves like a same-day planner or a handoff planner.

DST asymmetry check

America/Los_Angeles changes from -08:00 (PST) to -07:00 (PDT) on March 14, 2027 at about 3:00 AM.

Calendar evidence

No country holiday snapshot is attached to this exact pair yet, so the page leans on city anchors, IANA zones, offsets, and the live conversion table instead of pretending a local calendar exists.

Day-shift fingerprint

Across the 12 popular-hour answers, this pair has 12 same-day answers, 0 next-day answers, 0 previous-day answers. That mix is specific to the current America/Los_Angeles -> America/Phoenix relationship and helps users see whether dates must be written explicitly in invites, travel plans, and release schedules.

Same-offset and canonical audit

Same-offset converter clusters can look identical if the page only shows a numeric offset. This audit states whether the route should be indexed, which canonical peer it follows when consolidated, and what pair-specific evidence keeps the page useful.

Indexing posture

This pair remains indexable because the route has enough pair-specific context: America/Los_Angeles -> America/Phoenix, country anchors, city anchors, calendar notes, and day-shift examples.

Same-offset math check

PST and MST are not currently a same-offset pair; the live delta is +1h. Same-offset neighbors are still listed because users often confuse nearby abbreviations.

Neighbor audit

PDT (From side, -08:00), MDT (To side, -07:00), GMT-7 (To side, -07:00), YT (To side, -07:00) The page keeps these labels visible so SGT/HKT/GST-style clusters do not blur into one generic offset page.

Canonical evidence

PST/MST uses 12 same-day answers, 0 next-day answers, 0 previous-day answers; 7h strict workday overlap; source zones America/Los_Angeles and America/Phoenix; country anchors United States, Mexico, and Canada -> United States, Mexico, and Canada.

Local intent behind each abbreviation

Common places, calendars, markets, languages, and operating contexts behindPST and MST.

MST

MST local intent 1

MST is Mountain Standard Time, but the label is risky because North American Mountain-region cities do not all behave the same year-round. Denver-style locations can move to MDT while Arizona-style planning often stays on standard time.

MST

MST local intent 2

MST conversions should be pinned to the representative IANA zone before use. The practical context can involve Arizona, the US Mountain region, Canada or Mexico-facing schedules, outdoor tourism, sports broadcasts, and cross-border operations.

Country calendar contrast

Same-offset conversions can still land in different public-holiday, language, currency, and city-anchor contexts. These rows use the country profile and holiday snapshots behind each side of the pair.

PST

United States

616 mapped city anchors; zones America/Los_Angeles.capital Washington, D.C.; English; USD United States dollar

Holiday snapshot: New Year's Day (Jan 1, Public) · Martin Luther King, Jr. Day (Jan 19, Public) · Lincoln's Birthday (Feb 12, Observance) · Presidents Day (Feb 16, Public) · Good Friday (Apr 3, Public)

PST

Mexico

16 mapped city anchors; zones America/Tijuana.capital Mexico City; Spanish; MXN Mexican peso

Holiday snapshot: New Year's Day (Jan 1, Public) · Constitution Day (Feb 2, Public) · Benito Juárez's birthday (Mar 16, Public) · Maundy Thursday (Apr 2, Bank) · Good Friday (Apr 3, Bank)

PST

Canada

107 mapped city anchors; zones America/Vancouver.capital Ottawa; English, French; CAD Canadian dollar

Holiday snapshot: New Year's Day (Jan 1, Public) · Louis Riel Day (Feb 16, Public) · Islander Day (Feb 16, Public) · Heritage Day (Feb 16, Public) · Family Day (Feb 16, Public)

PST

Pitcairn

1 mapped city anchors; zones Pacific/Pitcairn.capital Adamstown; English; NZD New Zealand dollar

Holiday snapshot: No holiday snapshot attached for the current year.

MST

United States

187 mapped city anchors; zones America/Phoenix, America/Denver.capital Washington, D.C.; English; USD United States dollar

Holiday snapshot: New Year's Day (Jan 1, Public) · Martin Luther King, Jr. Day (Jan 19, Public) · Lincoln's Birthday (Feb 12, Observance) · Presidents Day (Feb 16, Public) · Good Friday (Apr 3, Public)

MST

Mexico

1 mapped city anchors; zones America/Ciudad_Juarez.capital Mexico City; Spanish; MXN Mexican peso

Holiday snapshot: New Year's Day (Jan 1, Public) · Constitution Day (Feb 2, Public) · Benito Juárez's birthday (Mar 16, Public) · Maundy Thursday (Apr 2, Bank) · Good Friday (Apr 3, Bank)

Neighboring abbreviation checks

These are the labels most likely to be confused with either side of this conversion. A matching UTC offset does not mean the same country, calendar, market, source convention, or user intent.

From side: PDT

same offset

PST and PDT match on offset right now, but the page should not collapse them: they carry different city anchors, country calendars, currencies, holidays, and user intent.

Current side
PST: Pitcairn Time via America/Los_Angeles, -08:00; cities Los Angeles, United States, Tijuana, Mexico, and San Diego, United States; countries United States, Mexico, and Canada.
Neighbor side
PDT: Pacific Time via America/Los_Angeles, -08:00; cities Los Angeles, United States, Tijuana, Mexico, and San Diego, United States; countries United States, Mexico, and Canada.
Open PDT

From side: AKDT

nearby

PST and AKDT are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.

Current side
PST: Pitcairn Time via America/Los_Angeles, -08:00; cities Los Angeles, United States, Tijuana, Mexico, and San Diego, United States; countries United States, Mexico, and Canada.
Neighbor side
AKDT: Alaska Time via America/Anchorage, -09:00; cities Anchorage, United States, Fairbanks, United States, and Eagle River, United States; countries United States.
Open AKDT

From side: AKST

nearby

PST and AKST are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.

Current side
PST: Pitcairn Time via America/Los_Angeles, -08:00; cities Los Angeles, United States, Tijuana, Mexico, and San Diego, United States; countries United States, Mexico, and Canada.
Neighbor side
AKST: Alaska Time via America/Anchorage, -09:00; cities Anchorage, United States, Fairbanks, United States, and Eagle River, United States; countries United States.
Open AKST

From side: GAMT

nearby

PST and GAMT are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.

Current side
PST: Pitcairn Time via America/Los_Angeles, -08:00; cities Los Angeles, United States, Tijuana, Mexico, and San Diego, United States; countries United States, Mexico, and Canada.
Neighbor side
GAMT: Gambier Time via Pacific/Gambier, -09:00; cities No country breakdown available; countries French Polynesia.
Open GAMT

From side: GMT-7

nearby

PST and GMT-7 are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.

Current side
PST: Pitcairn Time via America/Los_Angeles, -08:00; cities Los Angeles, United States, Tijuana, Mexico, and San Diego, United States; countries United States, Mexico, and Canada.
Neighbor side
GMT-7: Mexican Pacific Time via America/Hermosillo, -07:00; cities Hermosillo, Mexico, Ciudad Obregón, Mexico, and Nogales, Mexico; countries Mexico.
Open GMT-7

From side: MDT

nearby

PST and MDT are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.

Current side
PST: Pitcairn Time via America/Los_Angeles, -08:00; cities Los Angeles, United States, Tijuana, Mexico, and San Diego, United States; countries United States, Mexico, and Canada.
Neighbor side
MDT: Mountain Time via America/Ciudad_Juarez, -07:00; cities Ciudad Juárez, Mexico, Calgary, Canada, and Edmonton, Canada; countries Mexico, Canada, and United States.
Open MDT

To side: MDT

same offset

MST and MDT match on offset right now, but the page should not collapse them: they carry different city anchors, country calendars, currencies, holidays, and user intent.

Current side
MST: Mountain Time via America/Phoenix, -07:00; cities Phoenix, United States, Ciudad Juárez, Mexico, and Calgary, Canada; countries United States, Mexico, and Canada.
Neighbor side
MDT: Mountain Time via America/Ciudad_Juarez, -07:00; cities Ciudad Juárez, Mexico, Calgary, Canada, and Edmonton, Canada; countries Mexico, Canada, and United States.
Open MDT

To side: GMT-7

same offset

MST and GMT-7 match on offset right now, but the page should not collapse them: they carry different city anchors, country calendars, currencies, holidays, and user intent.

Current side
MST: Mountain Time via America/Phoenix, -07:00; cities Phoenix, United States, Ciudad Juárez, Mexico, and Calgary, Canada; countries United States, Mexico, and Canada.
Neighbor side
GMT-7: Mexican Pacific Time via America/Hermosillo, -07:00; cities Hermosillo, Mexico, Ciudad Obregón, Mexico, and Nogales, Mexico; countries Mexico.
Open GMT-7

To side: YT

same offset

MST and YT match on offset right now, but the page should not collapse them: they carry different city anchors, country calendars, currencies, holidays, and user intent.

Current side
MST: Mountain Time via America/Phoenix, -07:00; cities Phoenix, United States, Ciudad Juárez, Mexico, and Calgary, Canada; countries United States, Mexico, and Canada.
Neighbor side
YT: Yukon Time via America/Whitehorse, -07:00; cities Whitehorse, Canada; countries Canada.
Open YT

To side: CDT

nearby

MST and CDT are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.

Current side
MST: Mountain Time via America/Phoenix, -07:00; cities Phoenix, United States, Ciudad Juárez, Mexico, and Calgary, Canada; countries United States, Mexico, and Canada.
Neighbor side
CDT: Central Time via America/Chicago, -06:00; cities Chicago, United States, Houston, United States, and San Antonio, United States; countries United States, Canada, and Mexico.
Open CDT

To side: GALT

nearby

MST and GALT are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.

Current side
MST: Mountain Time via America/Phoenix, -07:00; cities Phoenix, United States, Ciudad Juárez, Mexico, and Calgary, Canada; countries United States, Mexico, and Canada.
Neighbor side
GALT: Galapagos Time via Pacific/Galapagos, -06:00; cities No country breakdown available; countries Ecuador.
Open GALT

To side: PDT

nearby

MST and PDT are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.

Current side
MST: Mountain Time via America/Phoenix, -07:00; cities Phoenix, United States, Ciudad Juárez, Mexico, and Calgary, Canada; countries United States, Mexico, and Canada.
Neighbor side
PDT: Pacific Time via America/Los_Angeles, -08:00; cities Los Angeles, United States, Tijuana, Mexico, and San Diego, United States; countries United States, Mexico, and Canada.
Open PDT

Jurisdiction and city roster

Abbreviations with the same UTC offset can still represent different countries, cities, currencies, languages, and civil-time histories. This roster keeps thePST to MST page grounded in those concrete places.

PST: United States (US); 616 mapped cities; zones America/Los Angeles; city anchors Los Angeles (America/Los_Angeles, pop 3,820,914), San Diego (America/Los_Angeles, pop 1,404,452), San Jose (America/Los_Angeles, pop 997,368), San Francisco (America/Los_Angeles, pop 827,526); official United States of America; capital Washington, D.C.; region Americas; subregion North America; population 340,110,988; area 9,525,067 km2; languages English; currency USD United States dollar.

PST: Mexico (MX); 16 mapped cities; zones America/Tijuana; city anchors Tijuana (America/Tijuana, pop 1,922,523), Mexicali (America/Tijuana, pop 1,032,686), Ensenada (America/Tijuana, pop 443,807), Rosarito (America/Tijuana, pop 100,660); official United Mexican States; capital Mexico City; region Americas; subregion North America; population 130,575,786; area 1,964,375 km2; languages Spanish; currency MXN Mexican peso.

PST: Canada (CA); 107 mapped cities; zones America/Vancouver; city anchors Vancouver (America/Vancouver, pop 662,248), Surrey (America/Vancouver, pop 568,322), Victoria (America/Vancouver, pop 289,625), Burnaby (America/Vancouver, pop 249,125); official Canada; capital Ottawa; region Americas; subregion North America; population 41,651,653; area 9,984,670 km2; languages English, French; currency CAD Canadian dollar.

PST: Pitcairn (PN); 1 mapped cities; zones Pacific/Pitcairn; city anchors Adamstown (Pacific/Pitcairn, pop 46); official Pitcairn Group of Islands; capital Adamstown; region Oceania; subregion Polynesia; population 35; area 47 km2; languages English; currency NZD New Zealand dollar.

MST: United States (US); 187 mapped cities; zones America/Phoenix, America/Denver; city anchors Phoenix (America/Phoenix, pop 1,650,070), Denver (America/Denver, pop 729,019), El Paso (America/Denver, pop 678,815), Albuquerque (America/Denver, pop 564,559); official United States of America; capital Washington, D.C.; region Americas; subregion North America; population 340,110,988; area 9,525,067 km2; languages English; currency USD United States dollar.

MST: Mexico (MX); 1 mapped cities; zones America/Ciudad Juarez; city anchors Ciudad Juárez (America/Ciudad_Juarez, pop 1,512,450); official United Mexican States; capital Mexico City; region Americas; subregion North America; population 130,575,786; area 1,964,375 km2; languages Spanish; currency MXN Mexican peso.

MST: Canada (CA); 34 mapped cities; zones America/Edmonton; city anchors Calgary (America/Edmonton, pop 1,306,784), Edmonton (America/Edmonton, pop 1,010,899), Lethbridge (America/Edmonton, pop 103,197), Red Deer (America/Edmonton, pop 100,844); official Canada; capital Ottawa; region Americas; subregion North America; population 41,651,653; area 9,984,670 km2; languages English, French; currency CAD Canadian dollar.

Abbreviation identity dossier

Same-offset converter pages can look deceptively alike. These records pin the page to the exact abbreviations, IANA zones, countries, and city anchors behind PST and MST.

From side meaning roster

PST (pst) is not marked ambiguous in the abbreviation catalog. Meaning records: Pitcairn Time at UTC-08:00; listed zones Pacific/Pitcairn; America/Los Angeles; America/Tijuana; America/Vancouver; source label Pitcairn Time - Adamstown.

From side country footprint

PST currently maps to 4 country footprints in the converter dataset: United States (US), Mexico (MX), Canada (CA), Pitcairn (PN). The footprint spans 4 IANA zones across 10 city anchors.

From side city anchors

PST city anchors in this indexed page family: Los Angeles [los-angeles-US, US, America/Los_Angeles, pop 3,820,914]; Tijuana [tijuana-MX, MX, America/Tijuana, pop 1,922,523]; San Diego [san-diego-US, US, America/Los_Angeles, pop 1,404,452]; Mexicali [mexicali-MX, MX, America/Tijuana, pop 1,032,686]; San Jose [san-jose-US, US, America/Los_Angeles, pop 997,368]; San Francisco [san-francisco-US, US, America/Los_Angeles, pop 827,526]; Seattle [seattle-US, US, America/Los_Angeles, pop 780,995]; Vancouver [vancouver-CA, CA, America/Vancouver, pop 662,248]; Portland [portland-5746545-US, US, America/Los_Angeles, pop 652,503]; Las Vegas [las-vegas-US, US, America/Los_Angeles, pop 641,903].

From side jurisdiction dossier

PST: United States (US); 616 mapped cities; zones America/Los Angeles; city anchors Los Angeles (America/Los_Angeles, pop 3,820,914), San Diego (America/Los_Angeles, pop 1,404,452), San Jose (America/Los_Angeles, pop 997,368), San Francisco (America/Los_Angeles, pop 827,526); official United States of America; capital Washington, D.C.; region Americas; subregion North America; population 340,110,988; area 9,525,067 km2; languages English; currency USD United States dollar. PST: Mexico (MX); 16 mapped cities; zones America/Tijuana; city anchors Tijuana (America/Tijuana, pop 1,922,523), Mexicali (America/Tijuana, pop 1,032,686), Ensenada (America/Tijuana, pop 443,807), Rosarito (America/Tijuana, pop 100,660); official United Mexican States; capital Mexico City; region Americas; subregion North America; population 130,575,786; area 1,964,375 km2; languages Spanish; currency MXN Mexican peso. PST: Canada (CA); 107 mapped cities; zones America/Vancouver; city anchors Vancouver (America/Vancouver, pop 662,248), Surrey (America/Vancouver, pop 568,322), Victoria (America/Vancouver, pop 289,625), Burnaby (America/Vancouver, pop 249,125); official Canada; capital Ottawa; region Americas; subregion North America; population 41,651,653; area 9,984,670 km2; languages English, French; currency CAD Canadian dollar. PST: Pitcairn (PN); 1 mapped cities; zones Pacific/Pitcairn; city anchors Adamstown (Pacific/Pitcairn, pop 46); official Pitcairn Group of Islands; capital Adamstown; region Oceania; subregion Polynesia; population 35; area 47 km2; languages English; currency NZD New Zealand dollar.

To side meaning roster

MST (mst) is not marked ambiguous in the abbreviation catalog. Meaning records: Mountain Time at UTC-07:00; listed zones America/Phoenix; America/Edmonton; America/Ciudad Juarez; America/Denver; source label Mountain Time - Phoenix, Tucson, Mesa, Chandler.

To side country footprint

MST currently maps to 3 country footprints in the converter dataset: United States (US), Mexico (MX), Canada (CA). The footprint spans 4 IANA zones across 10 city anchors.

To side city anchors

MST city anchors in this indexed page family: Phoenix [phoenix-US, US, America/Phoenix, pop 1,650,070]; Ciudad Juárez [ciudad-juarez-MX, MX, America/Ciudad_Juarez, pop 1,512,450]; Calgary [calgary-CA, CA, America/Edmonton, pop 1,306,784]; Edmonton [edmonton-CA, CA, America/Edmonton, pop 1,010,899]; Denver [denver-US, US, America/Denver, pop 729,019]; El Paso [el-paso-US, US, America/Denver, pop 678,815]; Albuquerque [albuquerque-US, US, America/Denver, pop 564,559]; Tucson [tucson-US, US, America/Phoenix, pop 542,629]; Mesa [mesa-US, US, America/Phoenix, pop 471,825]; Colorado Springs [colorado-springs-US, US, America/Denver, pop 456,568].

To side jurisdiction dossier

MST: United States (US); 187 mapped cities; zones America/Phoenix, America/Denver; city anchors Phoenix (America/Phoenix, pop 1,650,070), Denver (America/Denver, pop 729,019), El Paso (America/Denver, pop 678,815), Albuquerque (America/Denver, pop 564,559); official United States of America; capital Washington, D.C.; region Americas; subregion North America; population 340,110,988; area 9,525,067 km2; languages English; currency USD United States dollar. MST: Mexico (MX); 1 mapped cities; zones America/Ciudad Juarez; city anchors Ciudad Juárez (America/Ciudad_Juarez, pop 1,512,450); official United Mexican States; capital Mexico City; region Americas; subregion North America; population 130,575,786; area 1,964,375 km2; languages Spanish; currency MXN Mexican peso. MST: Canada (CA); 34 mapped cities; zones America/Edmonton; city anchors Calgary (America/Edmonton, pop 1,306,784), Edmonton (America/Edmonton, pop 1,010,899), Lethbridge (America/Edmonton, pop 103,197), Red Deer (America/Edmonton, pop 100,844); official Canada; capital Ottawa; region Americas; subregion North America; population 41,651,653; area 9,984,670 km2; languages English, French; currency CAD Canadian dollar.

From side timezone narrative

PST is a North or South American civil-time label, currently 8h behind UTC at -08:00. The label covers 4 IANA zones across 4 countries, with Los Angeles as the busiest live reference. The busiest cities using PST in the current catalog are Los Angeles, Tijuana, San Diego, Mexicali, and San Jose. The lead live reference on this page is Los Angeles (America/Los_Angeles), currently at -08:00 (PST). Those cities are what give PST its actual feel rather than the abstract offset. PST currently shows -08:00, but America/Los_Angeles observes seasonal clock changes — the next transition is around March 14, 2027. That means the offset on this page is a snapshot, not a permanent fact, so long-range scheduling should pin the underlying IANA zone instead of the abbreviation.

From side policy and precision notes

PST reads cleanly across the Americas in this dataset, but the same letters can mean different things elsewhere (notably CST, EST, and IST overlap with non-American labels). Pin the IANA zone when the audience is international. America/Los_Angeles has an upcoming offset change on March 14, 2027. After that point, PST on this page will read a different UTC offset until the next transition, so any saved timestamp should anchor to the IANA zone rather than the abbreviation. For precise work, the safest equivalent of PST is the exact IANA zone used by your city or system. America/Los_Angeles sits at -08:00, behind UTC, which means daily logs in this zone reach a new calendar date after UTC does — relevant for date-aligned reports and billing cutoffs.

From side nearby abbreviations

PST should not be blindly swapped with nearby labels. Adjacent references in the catalog: PDT (-08:00, Currently sits on the same UTC offset); AKDT (-09:00, Runs on a nearby UTC offset); AKST (-09:00, Runs on a nearby UTC offset); GAMT (-09:00, Runs on a nearby UTC offset); GMT-7 (-07:00, Runs on a nearby UTC offset); MDT (-07:00, Runs on a nearby UTC offset).

From side answer profile

PST has 1 meaning record, offset range UTC-08:00 to UTC-07:00, labels Pitcairn Time, and 4 country footprints across 4 IANA zones.

To side timezone narrative

MST is a North or South American civil-time label, currently 7h behind UTC at -07:00. The label covers 4 IANA zones across 3 countries, with Phoenix as the busiest live reference. The busiest cities using MST in the current catalog are Phoenix, Ciudad Juárez, Calgary, Edmonton, and Denver. The lead live reference on this page is Phoenix (America/Phoenix), currently at -07:00 (MST). Those cities are what give MST its actual feel rather than the abstract offset. MST is stable on America/Phoenix year-round, with no seasonal clock changes in the next year. That makes it a low-friction choice for recurring meetings and broadcast schedules — but software still prefers the IANA zone because governments can change civil-time rules independently of the short code.

To side policy and precision notes

MST reads cleanly across the Americas in this dataset, but the same letters can mean different things elsewhere (notably CST, EST, and IST overlap with non-American labels). Pin the IANA zone when the audience is international. America/Phoenix does not show an offset change in the next year, which makes MST predictable for short-term scheduling. Predictable is not the same as permanent — civil-time rules still get changed by governments on relatively short notice. For precise work, the safest equivalent of MST is the exact IANA zone used by your city or system. America/Phoenix sits at -07:00, behind UTC, which means daily logs in this zone reach a new calendar date after UTC does — relevant for date-aligned reports and billing cutoffs.

To side nearby abbreviations

MST should not be blindly swapped with nearby labels. Adjacent references in the catalog: MDT (-07:00, Shares the mountain time family); GMT-7 (-07:00, Currently sits on the same UTC offset); YT (-07:00, Currently sits on the same UTC offset); CDT (-06:00, Runs on a nearby UTC offset); GALT (-06:00, Runs on a nearby UTC offset); PDT (-08:00, Runs on a nearby UTC offset).

To side answer profile

MST has 1 meaning record, offset range UTC-07:00 to UTC-06:00, labels Mountain Time, and 3 country footprints across 4 IANA zones.

From side country reference summary

PST country anchor United States: The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic consisting of 50 states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States also asserts sovereignty over five major island territories and various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's third-largest land area and third-largest population, exceeding 341 million. Source: Wikipedia.

To side country reference summary

MST country anchor United States: The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic consisting of 50 states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States also asserts sovereignty over five major island territories and various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's third-largest land area and third-largest population, exceeding 341 million. Source: Wikipedia.

To side trust note 1

MST is Mountain Standard Time, but the label is risky because North American Mountain-region cities do not all behave the same year-round. Denver-style locations can move to MDT while Arizona-style planning often stays on standard time.

To side trust note 2

MST conversions should be pinned to the representative IANA zone before use. The practical context can involve Arizona, the US Mountain region, Canada or Mexico-facing schedules, outdoor tourism, sports broadcasts, and cross-border operations.

Pair identity check

PST/MST uses America/Los_Angeles -> America/Phoenix, offset delta +1h, overlap 7h, route /convert/pst/mst/, and live abbreviation readings PST/MST.

Market coverage on both sides

PST coverage on this page is led by Los Angeles, United States, Tijuana, Mexico, San Diego, United States, and Mexicali, Mexico, with 2 more in the live dataset. That mix is what makes PST feel anchored to West Coast and Pacific-edge American activity in practice rather than just an abbreviation on a chart.

MST coverage is led by Phoenix, United States, Ciudad Juárez, Mexico, Calgary, Canada, and Edmonton, Canada, with 2 more anchoring the wider label family. Combined with the PST side, this conversion ends up describing intra-America regional logistics and travel coordination.

Digit-roll converter

Adjust the time. Digits roll like an odometer, and the swap button flips the zones.

From
1
4
:
3
0
To
1
5
:
3
0

Same day in both places.

Common meeting times

PST to MST meeting times

Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.

PSTMSTDay relation
9:00 AM10:00 AMThu, Nov 5same day
12:00 PM1:00 PMThu, Nov 5same day
3:00 PM4:00 PMThu, Nov 5same day
6:00 PM7:00 PMThu, Nov 5same day
9:00 PM10:00 PMThu, Nov 5same day

MST to PST meeting times

Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.

MSTPSTDay relation
9:00 AM8:00 AMThu, Nov 5same day
12:00 PM11:00 AMThu, Nov 5same day
3:00 PM2:00 PMThu, Nov 5same day
6:00 PM5:00 PMThu, Nov 5same day
9:00 PM8:00 PMThu, Nov 5same day

Operational notes

PST to MST ranges from PST 9:00 AM (which lands at MST 10:00 AM) through PST 9:00 PM (MST 10:00 PM). PST and MST are close enough that this direction reads almost like a same-zone schedule — most PST invites land on a sensible MST hour without any extra effort.

MST to PST ranges from MST 9:00 AM (which lands at PST 8:00 AM) through MST 9:00 PM (PST 8:00 PM). MST and PST are close enough that this direction reads almost like a same-zone schedule — most MST invites land on a sensible PST hour without any extra effort.

Popular hour answers

These direct answers are here for the exact-intent searches people actually use, like “10 AM PST to MST” or “4 PM PST in MST”.

What is 8 AM PST in MST?

8 AM PST = 9:00 AM MST (09:00). On today's live calendar that lands on Thu, Nov 5 in MST, which means the answer is a same day conversion rather than a static offset lookup.

What is 9 AM PST in MST?

9 AM PST = 10:00 AM MST (10:00). On today's live calendar that lands on Thu, Nov 5 in MST, which means the answer is a same day conversion rather than a static offset lookup.

What is 10 AM PST in MST?

10 AM PST = 11:00 AM MST (11:00). On today's live calendar that lands on Thu, Nov 5 in MST, which means the answer is a same day conversion rather than a static offset lookup.

What is 11 AM PST in MST?

11 AM PST = 12:00 PM MST (12:00). On today's live calendar that lands on Thu, Nov 5 in MST, which means the answer is a same day conversion rather than a static offset lookup.

What is 12 PM PST in MST?

12 PM PST = 1:00 PM MST (13:00). On today's live calendar that lands on Thu, Nov 5 in MST, which means the answer is a same day conversion rather than a static offset lookup.

What is 1 PM PST in MST?

1 PM PST = 2:00 PM MST (14:00). On today's live calendar that lands on Thu, Nov 5 in MST, which means the answer is a same day conversion rather than a static offset lookup.

What is 2 PM PST in MST?

2 PM PST = 3:00 PM MST (15:00). On today's live calendar that lands on Thu, Nov 5 in MST, which means the answer is a same day conversion rather than a static offset lookup.

What is 3 PM PST in MST?

3 PM PST = 4:00 PM MST (16:00). On today's live calendar that lands on Thu, Nov 5 in MST, which means the answer is a same day conversion rather than a static offset lookup.

What is 4 PM PST in MST?

4 PM PST = 5:00 PM MST (17:00). On today's live calendar that lands on Thu, Nov 5 in MST, which means the answer is a same day conversion rather than a static offset lookup.

What is 5 PM PST in MST?

5 PM PST = 6:00 PM MST (18:00). On today's live calendar that lands on Thu, Nov 5 in MST, which means the answer is a same day conversion rather than a static offset lookup.

What is 6 PM PST in MST?

6 PM PST = 7:00 PM MST (19:00). On today's live calendar that lands on Thu, Nov 5 in MST, which means the answer is a same day conversion rather than a static offset lookup.

What is 9 PM PST in MST?

9 PM PST = 10:00 PM MST (22:00). On today's live calendar that lands on Thu, Nov 5 in MST, which means the answer is a same day conversion rather than a static offset lookup.

Overlap window and DST radar

The live gap is +1h right now, based on America/Los_Angeles at -08:00 and America/Phoenix at -07:00. America/Los_Angeles changes offset on March 14, 2027, so the gap moves to +0h after that transition.

The most usable workday block right now is about 7 hours: PST 9:00 AM previous day to 4:00 PM previous day, which lines up with MST 10:00 AM previous day to 5:00 PM previous day.

America/Los_Angeles changes from -08:00 (PST) to -07:00 (PDT) on March 14, 2027 at about 3:00 AM.

Reference zones

America/Los_Angeles

PST · -08:00

America/Phoenix

MST · -07:00

These are the busiest live references selected from the abbreviation families on this page.

Conversion Table

PSTMST
16:0017:00
17:0018:00
18:0019:00
19:0020:00
20:0021:00
21:0022:00
22:0023:00
23:0000:00
00:0001:00
01:0002:00
02:0003:00
03:0004:00
04:0005:00
05:0006:00
06:0007:00
07:0008:00
08:0009:00
09:0010:00
10:0011:00
11:0012:00
12:0013:00
13:0014:00
14:0015:00
15:0016:00

FAQ

How many hours is MST ahead of PST?
MST is currently +1h relative to PST, using America/Los_Angeles and America/Phoenix as the live reference zones on this page.
What is the best workday overlap between PST and MST?
The current 9-to-5 overlap is about 7 hours: PST 9:00 AM previous day to 4:00 PM previous day, which matches MST 10:00 AM previous day to 5:00 PM previous day.
Does the PST-MST time difference change during DST?
The live gap is +1h right now, based on America/Los_Angeles at -08:00 and America/Phoenix at -07:00. America/Los_Angeles changes offset on March 14, 2027, so the gap moves to +0h after that transition.
Which cities commonly use PST and MST?
PST commonly covers cities such as Los Angeles, Tijuana, San Diego, and Mexicali, while MST commonly covers cities such as Phoenix, Ciudad Juárez, Calgary, and Edmonton.
Should I use PST/MST or exact IANA zones?
Use the abbreviations for a quick read, but use exact IANA zones such as America/Los_Angeles and America/Phoenix when you need something precise in software, travel plans, or long-range scheduling.
Open Interactive Converter

Related Conversions

Related planning pages

Once a conversion pair matters, people usually need a city page, compare page, or a broader browse surface next.