Juneau time zone history
The Juneau zone has changed its standard time 3 times since 1970, tied for the most among the 29 zones in the United States. On standard time, clocks in Juneau run 2 minutes behind local mean solar time.
UTC−9
Standard time is UTC−9 (AKDT/AKST); clocks go forward to UTC−8 on the second Sunday in March and back on the first Sunday in November.
Summer time in every year since 1970
Before 1970
Standard time changes
| Date | Change | New standard time | Clock label |
|---|---|---|---|
| Before 1970 | |||
| October 19, 1867 | Standard time back 24 hours | UTC−8:57:41 | LMT |
| August 20, 1900 | Local mean time (UTC−8:57:41) replaced | UTC−8 | PST |
| Since 1970 | |||
| April 27, 1980 | Summer offset kept as standard time; clocks did not move | UTC−9 | YDT |
| October 26, 1980 | Summer offset kept as standard time; clocks did not move | UTC−8 | PST |
| October 30, 1983 | Standard time back 1 hour | UTC−9 | YST |
Daylight saving periods
| Years | Clocks go forward | Clocks go back | Shift and labels |
|---|---|---|---|
| Before 1970 | |||
| 1942 | February 9 | not that year | 1 hour, PST to PWT |
| 1945 | not that year | September 30 | 1 hour |
| 1969–1973 | last Sunday in April, 02:00 | last Sunday in October, 02:00 | 1 hour, PST to PDT |
| Since 1970 | |||
| 1974 | January 6 | October 27 | 1 hour, PST to PDT |
| 1975 | February 23 | October 26 | 1 hour, PST to PDT |
| 1976–1979 | last Sunday in April, 02:00 | last Sunday in October, 02:00 | 1 hour, PST to PDT |
| 1981–1982 | last Sunday in April, 02:00 | last Sunday in October, 02:00 | 1 hour, PST to PDT |
| 1983 | April 24 | not that year | 1 hour, PST to PDT |
| 1984–1986 | last Sunday in April, 02:00 | last Sunday in October, 02:00 | 1 hour, AKST to AKDT |
| 1987–2006 | first Sunday in April, 02:00 | last Sunday in October, 02:00 | 1 hour, AKST to AKDT |
| 2007–2037 | second Sunday in March, 02:00 | first Sunday in November, 02:00 | 1 hour, AKST to AKDT |
Clock changes in 2026, 2027 and 2028
The clocks go forward 1 hour (AKST to AKDT) on March 8, 2026, March 14, 2027 and March 12, 2028 at 02:00 and back 1 hour (AKDT to AKST) on November 1, 2026, November 7, 2027 and November 5, 2028 at 02:00, local time.
Also on UTC−9
Sitka (United States), Yakutat (United States), Metlakatla (United States), Anchorage (United States), Nome (United States) and Gambier Islands (French Polynesia).
Clocks next door since 1970
- Sitka (136 km): same time except 182 days in 1980.
- Whitehorse (Canada) (271 km): usually 1 hour ahead; different on 5,695 days in 1970–2026; 2 hours ahead today.
- Yakutat (334 km): same time except 4,868 days in 1970–1983.
- Metlakatla (393 km): same time except 5,118 days in 1980, 1983–2015, 2018 and 2019.
- Fort Nelson (Canada) (681 km): usually 1 hour ahead; different on 6,332 days in 1970–2026; 2 hours ahead today.