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America/Yakutat time zone

3:57AMAKST

AKSTUTC−9−4 h vs New York (you)

About America/Yakutat

America/Yakutat is the IANA time zone for Alaska: Yakutat in United States. It currently keeps Alaska Standard Time (AKST, UTC−9) in winter and Alaska Daylight Time (AKDT, UTC−8) in summer.

Its principal location is Yakutat at 59.55° N, 139.73° W.

Abbreviations in use: AKST, AKDT. Offset page: UTC−9.

Rule for future years (POSIX TZ string)

AKST9AKDT,M3.2.0,M11.1.0

The standard time is called AKST and is UTC−9. POSIX writes the offset with the opposite sign (west of Greenwich is positive), which is why the string says "9". Daylight saving time is called AKDT and is UTC−8. It starts on the second Sunday of March at 02:00 and ends on the first Sunday of November at 02:00, local time. Software that has no full tzdata copy, such as many embedded devices, can use this string directly as the TZ environment variable.

Upcoming transitions

Computed from tzdata 2026f; local times are read on the clock just before each change.

History of America/Yakutat since 1970

The record starts with local mean time (UTC+14:41), which ended on October 19, 1867. The first daylight saving time in the record is in 1942.

YearsClocksAbbreviations
1970–1973UTC−9 in winter, UTC−8 in summerYST, YDT
1974mostly UTC−8; also UTC−9 for part of the yearYST, YDT
1975 onwardUTC−9 in winter, UTC−8 in summerYST, YDT, AKST, AKDT

Before 1970

6 offset changes before 1970 in the record:

tzdata commits to accuracy from 1970 for every zone (zone1970.tab); earlier entries are historical research and may be incomplete.

Aliases and zones with the same clock

Other zones that keep exactly the same time under the current rules (but have a different history): America/Anchorage, America/Juneau, America/Metlakatla, America/Nome, America/Sitka.

Convert Yakutat time

Tip: Alt+↑/↓ steps the time by 15 minutes (Shift: one hour). The link keeps the date, time and direction.

Using America/Yakutat in code

Every major platform reads the same IANA ID. Store instants in UTC and convert with the ID at display time; never store a fixed offset for a place that has daylight saving time.

// JavaScript
new Date().toLocaleString('en-US', { timeZone: 'America/Yakutat' })

# Python 3.9+
from zoneinfo import ZoneInfo
from datetime import datetime
datetime.now(ZoneInfo('America/Yakutat'))

// Java
java.time.ZonedDateTime.now(java.time.ZoneId.of("America/Yakutat"))

// Go
loc, _ := time.LoadLocation("America/Yakutat")
time.Now().In(loc)

-- PostgreSQL
SELECT now() AT TIME ZONE 'America/Yakutat';

# Shell
TZ='America/Yakutat' date

Platforms ship their own copy of tzdata and update it on their own schedule. After a rule change, outputs can differ until the platform updates; this page uses tzdata 2026f.

Questions

What is the UTC offset of America/Yakutat?
UTC−9 in winter and UTC−8 in summer (daylight saving time from the second Sunday of March at 2:00 AM to the first Sunday of November at 2:00 AM).
Does America/Yakutat observe daylight saving time?
Yes: clocks move one hour forward on the second Sunday of March at 2:00 AM and back on the first Sunday of November at 2:00 AM.
Which countries use America/Yakutat?
United States, according to zone1970.tab in tzdata.

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