Timezone converter
MST to IST currently uses Mountain Time in America/Phoenix and India Time in Asia/Kolkata as the live reference pair, with a +12h 30m live gap. MST to IST matters whenever Phoenix and Mumbai need to coordinate across a +12h 30m gap. The MST side covers United States and Mexico, while IST covers India and Israel — 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.
IST is ambiguous in this dataset, so the live converter uses Asia/Kolkata as the busiest reference zone while the city list below shows the wider label family.
From
Mountain Time
America/Phoenix · MST -07:00
Major markets in this grouping include Phoenix, Ciudad Juárez, Calgary, Edmonton.
To
India Time
Asia/Kolkata · GMT+5:30 +05:30
Major markets in this grouping include Mumbai, Delhi, Bengaluru, Hyderabad.
Current gap
+12h 30m
MST -07:00 vs IST +05:30
9-to-5 overlap
No shared block
Meetings usually need an early or late handoff.
Representative countries
United States, Mexico, and Canada / India, Israel, and Sri Lanka
Based on the busiest city and zone usage found in the current dataset.
MST (Phoenix, -07:00) to IST (Mumbai, +05:30) is currently a +12h 30m conversion. Live coverage on the MST side is anchored by Phoenix, Ciudad Juárez, Calgary, and Edmonton; the IST side draws from Mumbai, Delhi, Bengaluru, and Hyderabad.
MST to IST matters whenever Phoenix and Mumbai need to coordinate across a +12h 30m gap. The MST side covers United States and Mexico, while IST covers India and Israel — that country mix is the practical reason this conversion shows up in calendars rather than the abstract offset math.
This pair is trans-Pacific, with one side in the Americas and the other in Asia or Oceania. The +12h 30m gap is large enough that morning on one side reliably overlaps evening on the other, which is why this conversion mostly serves global supply chains, gaming launch schedules, and follow-the-sun engineering.
Neither MST nor IST observes daylight saving on the reference zones used here, so the gap stays steady all year. That makes this pair predictable for recurring meetings, broadcast schedules, and contracts that care about a stable offset.
MST and IST sit 12h 30m apart, which leaves no shared 9-to-5 block. Live meetings have to bend one side's day, so most teams settle for one of two narrow windows: very early on the late side, or very late on the early side. That makes async messages, recorded standups, and clear handoff notes more valuable than calendar invites.
Reference zone, current offsets, country and city anchors, overlap math, and date-shift answers for MST to IST.
Reference pair
America/Phoenix -> Asia/Kolkata
Live offsets
MST -07:00 vs IST +05:30
Meaning split
Mountain Time / India Time
Country anchors
United States, Mexico, and Canada -> India, Israel, and Sri Lanka
City anchors
Phoenix, Ciudad Juárez, Calgary, Edmonton -> Mumbai, Delhi, Bengaluru, Hyderabad
Workday overlap
No strict 9-to-5 overlap in the current offset state
Morning answer
9 AM MST = 9:30 PM IST, same day
Evening answer
6 PM MST = 6:30 AM IST, next day
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.
MST to IST is pinned to America/Phoenix -> Asia/Kolkata, with the shorthand labels shown as context. The city anchors are Phoenix, Ciudad Juárez, Calgary, Edmonton on the MST side and Mumbai, Delhi, Bengaluru, Hyderabad on the IST side, with +12h 30m between the live reference zones.
The 12 popular-hour answers include 4 same-day conversions, 8 next-day conversions, and 0 previous-day conversions. That distribution is what separates this page from a static offset chart.
Nearby labels sharing a current offset include MDT (From side), GMT-7 (From side), YT (From side). They may match mathematically, but their country calendars, city anchors, and common search intent differ from this exact pair.
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 | IST: India (IN); 3776 mapped cities; capital New Delhi; English, Hindi, Tamil; INR Indian rupee | IST: Israel (IL); 108 mapped cities; capital Jerusalem; Arabic, Hebrew; ILS Israeli new shekel | IST: Sri Lanka (LK); 60 mapped cities; capital Sri Jayawardenepura Kotte; Sinhala, Tamil; LKR Sri Lankan rupee
Offset behavior, DST gap changes, local calendar evidence, and the day-shift pattern across the most common conversion hours.
MST/IST is a long-haul handoff gap: America/Phoenix currently reads -07:00, Asia/Kolkata reads +05:30, and the live delta is +12h 30m. This class decides whether the page behaves like a same-day planner or a handoff planner.
America/Phoenix and Asia/Kolkata do not show a detected near-term DST gap-change note in this sample, but the page still exposes exact IANA zones so users do not treat the abbreviation pair as permanently fixed.
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.
Across the 12 popular-hour answers, this pair has 4 same-day answers, 8 next-day answers, 0 previous-day answers. That mix is specific to the current America/Phoenix -> Asia/Kolkata relationship and helps users see whether dates must be written explicitly in invites, travel plans, and release schedules.
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.
This pair remains indexable because the route has enough pair-specific context: America/Phoenix -> Asia/Kolkata, country anchors, city anchors, calendar notes, and day-shift examples.
MST and IST are not currently a same-offset pair; the live delta is +12h 30m. Same-offset neighbors are still listed because users often confuse nearby abbreviations.
MDT (From side, -07:00), GMT-7 (From side, -07:00), YT (From side, -07:00) The page keeps these labels visible so SGT/HKT/GST-style clusters do not blur into one generic offset page.
MST/IST uses 4 same-day answers, 8 next-day answers, 0 previous-day answers; 0h strict workday overlap; source zones America/Phoenix and Asia/Kolkata; country anchors United States, Mexico, and Canada -> India, Israel, and Sri Lanka.
Common places, calendars, markets, languages, and operating contexts behindMST and IST.
MST
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 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.
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.
MST
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
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)
MST
34 mapped city anchors; zones America/Edmonton.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)
IST
3,776 mapped city anchors; zones Asia/Kolkata.capital New Delhi; English, Hindi, Tamil; INR Indian rupee
Holiday snapshot: Republic Day (Jan 26, Public) · Holi (Mar 4, Public) · Eid al-Fitr (Mar 21, Public) · Mahavir Jayanti (Mar 31, Public) · Good Friday (Apr 3, Public)
IST
108 mapped city anchors; zones Asia/Jerusalem.capital Jerusalem; Arabic, Hebrew; ILS Israeli new shekel
Holiday snapshot: No holiday snapshot attached for the current year.
IST
60 mapped city anchors; zones Asia/Colombo.capital Sri Jayawardenepura Kotte; Sinhala, Tamil; LKR Sri Lankan rupee
Holiday snapshot: No holiday snapshot attached for the current year.
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.
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.
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.
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.
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.
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.
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.
IST and IOT are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.
IST and AFT are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.
IST and BST are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.
IST and BTT are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.
IST and CCT are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.
IST and FSAT are close enough to be confused in search, but they are not the same clock label and should be pinned to exact IANA zones.
Abbreviations with the same UTC offset can still represent different countries, cities, currencies, languages, and civil-time histories. This roster keeps theMST to IST page grounded in those concrete places.
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.
IST: India (IN); 3776 mapped cities; zones Asia/Kolkata; city anchors Mumbai (Asia/Kolkata, pop 12,691,836), Delhi (Asia/Kolkata, pop 11,034,555), Bengaluru (Asia/Kolkata, pop 8,495,492), Hyderabad (Asia/Kolkata, pop 6,993,262); official Republic of India; capital New Delhi; region Asia; subregion Southern Asia; population 1,417,492,000; area 3,287,263 km2; languages English, Hindi, Tamil; currency INR Indian rupee.
IST: Israel (IL); 108 mapped cities; zones Asia/Jerusalem; city anchors Jerusalem (Asia/Jerusalem, pop 971,800), Tel Aviv (Asia/Jerusalem, pop 432,892), West Jerusalem (Asia/Jerusalem, pop 400,000), Haifa (Asia/Jerusalem, pop 285,316); official State of Israel; capital Jerusalem; region Asia; subregion Western Asia; population 10,134,800; area 21,937 km2; languages Arabic, Hebrew; currency ILS Israeli new shekel.
IST: Sri Lanka (LK); 60 mapped cities; zones Asia/Colombo; city anchors Colombo (Asia/Colombo, pop 648,034), Dehiwala-Mount Lavinia (Asia/Colombo, pop 219,827), Maharagama (Asia/Colombo, pop 195,355), Jaffna (Asia/Colombo, pop 169,102); official Democratic Socialist Republic of Sri Lanka; capital Sri Jayawardenepura Kotte; region Asia; subregion Southern Asia; population 21,763,170; area 65,610 km2; languages Sinhala, Tamil; currency LKR Sri Lankan rupee.
Same-offset converter pages can look deceptively alike. These records pin the page to the exact abbreviations, IANA zones, countries, and city anchors behind MST and IST.
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.
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.
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].
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.
IST (ist) is ambiguous in the abbreviation catalog. Meaning records: Israel Time at UTC+02:00; listed zones Asia/Jerusalem; source label Israel Time - Jerusalem, Tel Aviv, West Jerusalem, Haifa | India Time at UTC+05:30; listed zones Asia/Colombo; Asia/Kolkata; source label India Time - Colombo, Dehiwala-Mount Lavinia, Maharagama, Jaffna.
IST currently maps to 3 country footprints in the converter dataset: India (IN), Israel (IL), Sri Lanka (LK). The footprint spans 3 IANA zones across 10 city anchors.
IST city anchors in this indexed page family: Mumbai [mumbai-IN, IN, Asia/Kolkata, pop 12,691,836]; Delhi [delhi-IN, IN, Asia/Kolkata, pop 11,034,555]; Bengaluru [bengaluru-IN, IN, Asia/Kolkata, pop 8,495,492]; Hyderabad [hyderabad-IN, IN, Asia/Kolkata, pop 6,993,262]; Ahmedabad [ahmedabad-IN, IN, Asia/Kolkata, pop 6,357,693]; Chennai [chennai-IN, IN, Asia/Kolkata, pop 4,681,087]; Kolkata [kolkata-IN, IN, Asia/Kolkata, pop 4,631,392]; Surat [surat-IN, IN, Asia/Kolkata, pop 4,591,246]; Pune [pune-IN, IN, Asia/Kolkata, pop 3,124,458]; Jaipur [jaipur-IN, IN, Asia/Kolkata, pop 3,046,163].
IST: India (IN); 3776 mapped cities; zones Asia/Kolkata; city anchors Mumbai (Asia/Kolkata, pop 12,691,836), Delhi (Asia/Kolkata, pop 11,034,555), Bengaluru (Asia/Kolkata, pop 8,495,492), Hyderabad (Asia/Kolkata, pop 6,993,262); official Republic of India; capital New Delhi; region Asia; subregion Southern Asia; population 1,417,492,000; area 3,287,263 km2; languages English, Hindi, Tamil; currency INR Indian rupee. IST: Israel (IL); 108 mapped cities; zones Asia/Jerusalem; city anchors Jerusalem (Asia/Jerusalem, pop 971,800), Tel Aviv (Asia/Jerusalem, pop 432,892), West Jerusalem (Asia/Jerusalem, pop 400,000), Haifa (Asia/Jerusalem, pop 285,316); official State of Israel; capital Jerusalem; region Asia; subregion Western Asia; population 10,134,800; area 21,937 km2; languages Arabic, Hebrew; currency ILS Israeli new shekel. IST: Sri Lanka (LK); 60 mapped cities; zones Asia/Colombo; city anchors Colombo (Asia/Colombo, pop 648,034), Dehiwala-Mount Lavinia (Asia/Colombo, pop 219,827), Maharagama (Asia/Colombo, pop 195,355), Jaffna (Asia/Colombo, pop 169,102); official Democratic Socialist Republic of Sri Lanka; capital Sri Jayawardenepura Kotte; region Asia; subregion Southern Asia; population 21,763,170; area 65,610 km2; languages Sinhala, Tamil; currency LKR Sri Lankan rupee.
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.
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.
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).
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.
IST is reused across 2 different meanings in this dataset — India Time and Israel Time — which is why the short code alone is not enough to identify a place. Each meaning maps to its own IANA zone family and its own DST behavior, and they happen to share the same letters by historical accident more than by design. The busiest cities using IST in the current catalog are Mumbai, Delhi, Bengaluru, Hyderabad, and Ahmedabad. The lead live reference on this page is Mumbai (Asia/Kolkata), currently at +05:30 (GMT+5:30). Those cities are what give IST its actual feel rather than the abstract offset. Because IST spans UTC+02:00 to UTC+05:30 across the active meanings, software, calendars, and contracts should always pin a specific IANA zone such as Asia/Kolkata or a literal UTC offset. The short label is fine for headlines and chat; it is the wrong primitive for storing or scheduling timestamps.
IST appears with 2 distinct meanings in current data, splitting across UTC+02:00 to UTC+05:30. The short label looks tidy in writing but quietly hides which place you mean — pick a city, a country, or an IANA zone before it matters. Asia/Kolkata does not show an offset change in the next year, which makes IST 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 IST is the exact IANA zone used by your city or system. Asia/Kolkata sits at +05:30, ahead of UTC, which means daily logs in this zone reach a new calendar date before UTC does — a small detail that breaks date-based reporting if missed.
IST should not be blindly swapped with nearby labels. Adjacent references in the catalog: IOT (+06:00, Runs on a nearby UTC offset); AFT (+04:30, Runs on a nearby UTC offset); BST (+06:00, Runs on a nearby UTC offset); BTT (+06:00, Runs on a nearby UTC offset); CCT (+06:30, Runs on a nearby UTC offset); FSAT (+05:00, Runs on a nearby UTC offset).
IST has 2 meaning records, offset range UTC+02:00 to UTC+05:30, labels India Time, Israel Time, and 3 country footprints across 3 IANA zones.
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.
IST country anchor India: India, officially the Republic of India, is a country in South Asia. It is the seventh-largest country by area; the most populous country since 2023; and, since its independence in 1947, the world's most populous democracy. Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the north; and Bangladesh and Myanmar to the east. In the Indian Ocean, India is near Sri Lanka and the Maldives. Its Andaman and Nicobar Islands share a maritime border with Myanmar, Thailand, and Indonesia. Source: Wikipedia.
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 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.
MST/IST uses America/Phoenix -> Asia/Kolkata, offset delta +12h 30m, overlap 0h, route /convert/mst/ist/, and live abbreviation readings MST/GMT+5:30.
MST coverage on this page is led by Phoenix, United States, Ciudad Juárez, Mexico, Calgary, Canada, and Edmonton, Canada, with 2 more in the live dataset. That mix is what makes MST feel anchored to West Coast and Pacific-edge American activity in practice rather than just an abbreviation on a chart.
IST coverage is led by Mumbai, India, Delhi, India, Bengaluru, India, and Hyderabad, India, with 2 more anchoring the wider label family. Combined with the MST side, this conversion ends up describing trans-Pacific outsourcing handoffs, gaming and entertainment release windows, and follow-the-sun engineering rotations.
Adjust the time. Digits roll like an odometer, and the swap button flips the zones.
That is the next day in Kolkata.
Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.
| MST | IST | Day relation |
|---|---|---|
| 9:00 AM | 9:30 PMThu, Nov 5 | same day |
| 12:00 PM | 12:30 AMFri, Nov 6 | next day |
| 3:00 PM | 3:30 AMFri, Nov 6 | next day |
| 6:00 PM | 6:30 AMFri, Nov 6 | next day |
| 9:00 PM | 9:30 AMFri, Nov 6 | next day |
Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.
| IST | MST | Day relation |
|---|---|---|
| 9:00 AM | 8:30 PMThu, Nov 5 | previous day |
| 12:00 PM | 11:30 PMThu, Nov 5 | previous day |
| 3:00 PM | 2:30 AMFri, Nov 6 | same day |
| 6:00 PM | 5:30 AMFri, Nov 6 | same day |
| 9:00 PM | 8:30 AMFri, Nov 6 | same day |
MST to IST ranges from MST 9:00 AM (which lands at IST 9:30 PM) through MST 9:00 PM (IST 9:30 AM). Most of those slots fall on a different calendar day on the IST side, which is why this direction always needs explicit dates in invites and ticket comments — the time alone is not enough.
IST to MST ranges from IST 9:00 AM (which lands at MST 8:30 PM) through IST 9:00 PM (MST 8:30 AM). With no clean 9-to-5 overlap between IST and MST, both ends of this range push outside standard hours — useful for recorded standups and async work, awkward for live calls.
These direct answers are here for the exact-intent searches people actually use, like “10 AM MST to IST” or “4 PM MST in IST”.
8 AM MST = 8:30 PM IST (20:30). On today's live calendar that lands on Thu, Nov 5 in IST, which means the answer is a same day conversion rather than a static offset lookup.
9 AM MST = 9:30 PM IST (21:30). On today's live calendar that lands on Thu, Nov 5 in IST, which means the answer is a same day conversion rather than a static offset lookup.
10 AM MST = 10:30 PM IST (22:30). On today's live calendar that lands on Thu, Nov 5 in IST, which means the answer is a same day conversion rather than a static offset lookup.
11 AM MST = 11:30 PM IST (23:30). On today's live calendar that lands on Thu, Nov 5 in IST, which means the answer is a same day conversion rather than a static offset lookup.
12 PM MST = 12:30 AM IST (00:30). On today's live calendar that lands on Fri, Nov 6 in IST, which means the answer is a next day conversion rather than a static offset lookup.
1 PM MST = 1:30 AM IST (01:30). On today's live calendar that lands on Fri, Nov 6 in IST, which means the answer is a next day conversion rather than a static offset lookup.
2 PM MST = 2:30 AM IST (02:30). On today's live calendar that lands on Fri, Nov 6 in IST, which means the answer is a next day conversion rather than a static offset lookup.
3 PM MST = 3:30 AM IST (03:30). On today's live calendar that lands on Fri, Nov 6 in IST, which means the answer is a next day conversion rather than a static offset lookup.
4 PM MST = 4:30 AM IST (04:30). On today's live calendar that lands on Fri, Nov 6 in IST, which means the answer is a next day conversion rather than a static offset lookup.
5 PM MST = 5:30 AM IST (05:30). On today's live calendar that lands on Fri, Nov 6 in IST, which means the answer is a next day conversion rather than a static offset lookup.
6 PM MST = 6:30 AM IST (06:30). On today's live calendar that lands on Fri, Nov 6 in IST, which means the answer is a next day conversion rather than a static offset lookup.
9 PM MST = 9:30 AM IST (09:30). On today's live calendar that lands on Fri, Nov 6 in IST, which means the answer is a next day conversion rather than a static offset lookup.
The live gap is +12h 30m right now, based on America/Phoenix at -07:00 and Asia/Kolkata at +05:30. Neither reference zone shows an offset change in the next year, so the gap should stay stable.
There is no strict 9 AM to 5 PM overlap right now, so this pair is better for handoffs, travel planning, or async coordination than for midday meetings.
America/Phoenix
MST · -07:00
Asia/Kolkata
GMT+5:30 · +05:30
These are the busiest live references selected from the abbreviation families on this page.
| MST | IST |
|---|---|
| 17:00 | 05:30 |
| 18:00 | 06:30 |
| 19:00 | 07:30 |
| 20:00 | 08:30 |
| 21:00 | 09:30 |
| 22:00 | 10:30 |
| 23:00 | 11:30 |
| 00:00 | 12:30 |
| 01:00 | 13:30 |
| 02:00 | 14:30 |
| 03:00 | 15:30 |
| 04:00 | 16:30 |
| 05:00 | 17:30 |
| 06:00 | 18:30 |
| 07:00 | 19:30 |
| 08:00 | 20:30 |
| 09:00 | 21:30 |
| 10:00 | 22:30 |
| 11:00 | 23:30 |
| 12:00 | 00:30 |
| 13:00 | 01:30 |
| 14:00 | 02:30 |
| 15:00 | 03:30 |
| 16:00 | 04:30 |
Countries represented here include United States, Mexico, and Canada.
Countries represented here include India, Israel, and Sri Lanka.
Once a conversion pair matters, people usually need a city page, compare page, or a broader browse surface next.
Interactive converter
Move from this static pair into the full timezone converter with more cities and abbreviations.
Compare city pairs
Use compare pages when the practical question is overlap, not just offset arithmetic.
World clock
Open live city clocks after narrowing the timezone pair you care about.
Browse city pages
Jump into the strongest city pages when you want location-specific timezone context.
