SST to HAST Converter
HAST is not used on this date
This converter keeps HAST at UTC−10. Adak uses HDT (UTC−9) on this date. Open the HDT converter.Start by searching for a time zone, city, or town.
Add one or more places to compare local times, adjust the date, and share the result.
Quick answers
Selected conversion
1:00 am01:00 SST (UTC-11), Oct 23, 2026 = 2:00 am02:00 HAST (UTC-10), Oct 23, 2026
SST is 1 hour behind HAST.
SST and HAST examples
These examples always use SST (UTC-11) and HAST (UTC-10). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
SST is 1 hour behind HAST.
How the time difference changes
SST is 1 hour behind HAST year-round.
Working hours of 9:00 am to 6:00 pm in SST correspond to 10:00 am to 7:00 pm in HAST.Working hours of 09:00 to 18:00 in SST correspond to 10:00 to 19:00 in HAST.
Compare SST time with HAST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Samoa Standard Time is 1 hour behind Hawaii-Aleutian Standard Time.
1:00 am01:00 in SST is 2:00 am02:00 in HAST
SST to HAST call time
Best time for a conference call or a meeting is between 9am-5pm09:00-17:00 in SST which corresponds to 10am-6pm10:00-18:00 in HAST
1:00 am01:00 Samoa Standard Time (SST). Offset UTC -11:00 hours
2:00 am02:00 Hawaii-Aleutian Standard Time (HAST). Offset UTC -10:00 hours
1:00 am01:00 SST / 2:00 am02:00 HAST
Choose an hour to update the converter. Day labels such as “next day” or “+1” are relative to the selected date in the first column. Use Up and Down arrow keys, Home or End to move between hours, then Enter or Space to select.
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| 00:00 next day |
Samoa Standard Time
Offset: SST is 11 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: American Samoa, United States Minor Outlying Islands
Principal Cities: The largest city in the SST time zone is Pago Pago in American Samoa, with about 11,500 people. Other major cities in this time zone include Tāfuna, Nu‘uuli, Leone, Faleniu.
Daylight Saving: Clocks in Samoa Standard Time (SST) do not change for daylight saving time, so SST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
SST representations, usage and related time zones
- -11 - basic short
- -1100 - basic
- -11:00 - extended
- -1100 - sign character (-) followed by a four digit time providing hours (11) and minutes (00) of the offset. Indicates an offset of eleven hours to the west of the zero meridian.
- X-ray - Military abbreviation for SST
- X - short form of 'X-ray'
- Pacific/Midway
- Pacific/Pago_Pago
- Pacific/Samoa
- US/Samoa
- NUT - Niue Time
- SST - Samoa Standard Time
- X - X-ray Time Zone
Hawaii-Aleutian Standard Time
Offset: HAST is 10 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: United States
Today the shaded areas are on UTC−9 (HDT).
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Hawaii-Aleutian Daylight Time (HADT).
End: Hawaii-Aleutian Standard Time (HAST) ended on Sunday, March 8, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Sunday, March 8, 2026, 3:00 am03:00 local daylight time instead. Standard time ends annually on the second Sunday of March.
Start: Hawaii-Aleutian Standard Time (HAST) starts on Sunday, November 1, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, November 1, 2026, 1:00 am01:00. Standard time starts annually on the first Sunday of November.
See USA daylight saving time and upcoming clock changes worldwide.
HAST representations, usage and related time zones
- -10 - basic short
- -1000 - basic
- -10:00 - extended
- -1000 - sign character (-) followed by a four digit time providing hours (10) and minutes (00) of the offset. Indicates an offset of ten hours to the west of the zero meridian.
- Whiskey - Military abbreviation for HAST
- W - short form of 'Whiskey'
- HAST - Hawaii-Aleutian Standard Time
- CKT - Cook Island Time
- HST - Hawaii Standard Time
- TAHT - Tahiti Time
- W - Whiskey Time Zone