Machine-readable rule source
Exact offsets and transition rows come from the IANA Time Zone Database as exposed by the deployed runtime. IANA publishes tzdb releases when governments change civil-time rules.
Check IANA Time Zone DatabaseIANA timezone
America/Los Angeles.
PDTUTC-07:00Observing DST
America/Los Angeles is the IANA timezone for United States, currently at UTC-07:00 (PDT). It observes daylight saving time, so the offset changes on the scheduled transition dates each year. The zone covers 4 cities listed below, with live clocks updating every second.
Offset, DST behavior, and city coverage are refreshed from the live timezone dataset during the page revalidation window.
Current time in PDT
--:--:--America/Los Angeles · UTC-07:00
Abbreviation
PDT
UTC Offset
UTC-07:00
DST Status
Observing DST
Country
United States
Timezone planning depth
What America/Los Angeles is useful for
A timezone page should do more than define an offset. These notes connect the zone to city clocks, DST behavior, converters, and adjacent country planning pages.
Zone identity
America/Los Angeles is rendered as PDT at UTC-07:00 for United States. The IANA zone ID is the stable key; the abbreviation is only the short display label.
DST behavior
America/Los Angeles has 1 scheduled offset transition in the next 12 months. Next transition: March 14, 2027 (UTC-08:00 → UTC-07:00, +1h). Cumulative offset movement across the window is +1h. Use the IANA zone ID rather than a fixed UTC offset when scheduling across these dates.
City coverage
4 indexable cities sit in this zone after locale and crawl-safety filters, with Los Angeles, San Diego, San Jose, and San Francisco among the examples shown.
Conversion handoff
PDT has no pre-built converter pair, so a custom comparison runs through the general timezone converter instead.
Adjacent planning context
The most useful next steps from this timezone page are holiday calendars, airport-country planning, and city clocks. Those links keep the zone page connected to real user tasks rather than stopping at an offset definition.
Abbreviations across the year
America/Los Angeles resolves to multiple display abbreviations in the next 12 months: PDT and PST. The abbreviation rotates with the offset, which is why long-lived calendar entries should be anchored to the IANA zone instead of a saved abbreviation.
Offset stability
America/Los Angeles spends about 236 days at UTC-07:00 across the forward 12-month window, which makes it the longer-running of two seasonal offsets. The remaining time is split across the other offsets listed in the year-of-DST card.
Peer zones at the same offset
Other IANA zones currently aligned at UTC-07:00 include Pacific/Pitcairn. Same-offset peers can drift apart later in the year if their DST rules differ, so a peer match today is not a permanent equivalence.
Country roster
America/Los Angeles is used as the primary clock anchor for United States. The roster is derived from country-zone mappings, so it reflects which jurisdictions adopt this IANA zone rather than which countries happen to share its current offset.
Timezone abbreviations can be ambiguous. The IANA zone name is the canonical key used for clocks, city pages, and conversion math.
Source-change watch
When timezone policy changes
eCFR 49 CFR 71.2
Pacific Time follows the federal DST calendar in observing jurisdictions; do not generalize this to Arizona, Hawaii, or U.S. territories.
Check policy sourceYear-round offset behavior
America/Los Angeles across the next 12 months
The forward 12-month sweep returned 1 scheduled offset transition. Cumulative offset movement is +1h. Anchor stored timestamps to the IANA zone, not to a fixed UTC offset.
| Date (local) | Local time | From | To | Gap |
|---|---|---|---|---|
| March 14, 2027 | 3:00 AM | UTC-08:00 (PST) | UTC-07:00 (PDT) | +1h |
Offset window
UTC-08:00 (PST)
129 days
Offset window
UTC-07:00 (PDT)
236 days
Primary offset across the window: UTC-07:00 (PDT) for about 236 days.
Coverage reference
What America/Los Angeles covers
Country roster
Peer zones at UTC-08:00 right now
Same-offset peers can drift apart later in the year if their DST rules differ; today's offset match is not a permanent equivalence.
Top cities in America/Los Angeles (by population)
DST mismatch radar
Meetings drift when regions change their clocks on different weekends. Dates below are computed from the IANA time zone rules as of 5 Nov 2026.
Upcoming DST shifts
- United States and CanadaClocks go forward 1 hour · UTC-05:00 → UTC-04:00Sun 14 Mar 2027
- UK and European UnionClocks go forward 1 hour · UTC+00:00 → UTC+01:00Sun 28 Mar 2027
- New ZealandClocks go back 1 hour · UTC+13:00 → UTC+12:00Sun 4 Apr 2027
- South-east AustraliaClocks go back 1 hour · UTC+11:00 → UTC+10:00Sun 4 Apr 2027
Meetings at risk
- New York ↔ London
- Sun 14 Mar 2027 (New York changes)5 h → 4 h
- Sun 28 Mar 2027 (London changes)4 h → 5 h
- Sun 31 Oct 2027 (London changes)5 h → 4 h
- Sun 7 Nov 2027 (New York changes)4 h → 5 h
4 h instead of 5 h for 14 days, Sun 14 Mar 2027 to Sun 28 Mar 2027.
4 h instead of 5 h for 7 days, Sun 31 Oct 2027 to Sun 7 Nov 2027.
- New York ↔ Sydney
- Sun 14 Mar 2027 (New York changes)16 h → 15 h
- Sun 4 Apr 2027 (Sydney changes)15 h → 14 h
- Sun 3 Oct 2027 (Sydney changes)14 h → 15 h
- Sun 7 Nov 2027 (New York changes)15 h → 16 h
- London ↔ Sydney
- Sun 28 Mar 2027 (London changes)11 h → 10 h
- Sun 4 Apr 2027 (Sydney changes)10 h → 9 h
- Sun 3 Oct 2027 (Sydney changes)9 h → 10 h
- Sun 31 Oct 2027 (London changes)10 h → 11 h
Each gap is how many hours the second city is ahead of the first.
Cities in PDT
FAQ
- What is the current UTC offset for America/Los Angeles?
- America/Los Angeles is currently at UTC-08:00 (PST). The page revalidates weekly, but live clocks on this page tick from the IANA zone in real time.
- Does America/Los Angeles observe daylight saving time in 2027?
- Yes. America/Los Angeles has 1 scheduled transition in the next 12 months. The first is March 14, 2027 (UTC-08:00 → UTC-07:00, +1h). Anchor saved timestamps to the IANA zone, not to a fixed UTC offset, so they survive the change automatically.
- Which cities use America/Los Angeles?
- America/Los Angeles is the canonical clock for cities including Los Angeles, San Diego, San Jose, San Francisco. The page lists 4 indexable cities in this zone after locale and crawl-safety filters.
- What abbreviations does America/Los Angeles use?
- America/Los Angeles resolves to PDT, PST across the next 12 months — the abbreviation rotates with each DST transition. Calendar entries should anchor to the IANA zone instead of an abbreviation so the right offset is used in each window.
- Why does United States use America/Los Angeles?
- United States is mapped to America/Los Angeles as one of its IANA zones in the country-zone catalog. The IANA zone records each jurisdiction's historical offset and DST rule changes; America/Los Angeles stores the rules used by United States (ISO US).
Related timezone pages
Most timezone-reference visits naturally branch into a country page, abbreviation page, or converter workflow.
Time in United States
Open the country hub for city clocks, holidays, airports, and broader timezone context.
Timezone converter
Move from zone reference into hour-by-hour practical conversions.
Browse city pages
Use the human-readable city index if the next question is really about a city, not a zone string.