Y to HAST Converter
Quick answers
Selected conversion
The selected date and time will appear here when the converter loads.
Y and HAST examples
These examples always use Y (UTC-12) 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.
Y is 2 hours behind HAST.
How the time difference changes
Y is 2 hours behind HAST year-round.
Working hours of 9:00 am to 5:00 pm in Y correspond to 11:00 am to 7:00 pm in HAST.
Compare Y time with HAST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Yankee Time Zone is 2 hours behind Hawaii-Aleutian Standard Time
12:00 am00:00 in Y is 2:00 am02:00 in HAST
Y to HAST call time
Best time for a conference call or a meeting is between 9am-3pm in Y which corresponds to 11am-5pm in HAST
12:00 am00:00 Yankee Time Zone (Y). Offset UTC -12:00 hours
2:00 am02:00 Hawaii-Aleutian Standard Time (HAST). Offset UTC -10:00 hours
12:00 am00:00 Y / 2:00 am02:00 HAST
| Y | HAST |
|---|---|
| 12am (midnight) | 2am |
| 1am | 3am |
| 2am | 4am |
| 3am | 5am |
| 4am | 6am |
| 5am | 7am |
| 6am | 8am |
| 7am | 9am |
| 8am | 10am |
| 9am | 11am |
| 10am | 12pm (noon) |
| 11am | 1pm |
| 12pm (noon) | 2pm |
| 1pm | 3pm |
| 2pm | 4pm |
| 3pm | 5pm |
| 4pm | 6pm |
| 5pm | 7pm |
| 6pm | 8pm |
| 7pm | 9pm |
| 8pm | 10pm |
| 9pm | 11pm |
| 10pm | 12am (midnight) |
| 11pm | 1am |
| 00:00 | 02:00 |
| 01:00 | 03:00 |
| 02:00 | 04:00 |
| 03:00 | 05:00 |
| 04:00 | 06:00 |
| 05:00 | 07:00 |
| 06:00 | 08:00 |
| 07:00 | 09:00 |
| 08:00 | 10:00 |
| 09:00 | 11:00 |
| 10:00 | 12:00 |
| 11:00 | 13:00 |
| 12:00 | 14:00 |
| 13:00 | 15:00 |
| 14:00 | 16:00 |
| 15:00 | 17:00 |
| 16:00 | 18:00 |
| 17:00 | 19:00 |
| 18:00 | 20:00 |
| 19:00 | 21:00 |
| 20:00 | 22:00 |
| 21:00 | 23:00 |
| 22:00 | 00:00 |
| 23:00 | 01:00 |
Yankee Time Zone
Offset: Y is 12 hours behind Greenwich Mean Time (GMT) and is used in Military
Daylight Saving: Clocks in Yankee Time Zone (Y) do not change for daylight saving time, so Y stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.
Y representations, usage and related time zones
- -12 - basic short
- -1200 - basic
- -12:00 - extended
- -1200 - sign character (-) followed by a four digit time providing hours (12) and minutes (00) of the offset. Indicates an offset of twelve hours to the west of the zero meridian.
- Yankee - Military abbreviation for Y
- Y - short form of 'Yankee'
Hawaii-Aleutian Standard Time
Offset: HAST is 10 hours behind Greenwich Mean Time (GMT) and is used in America
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).
Start: Hawaii-Aleutian Standard Time (HAST) started on Sunday, November 2, 2025 at 2:00 am local time and clocks were set one hour back to Sunday, November 2, 2025, 1:00 am. Standard time starts annually on the first Sunday of November.
End: Hawaii-Aleutian Standard Time (HAST) ends on Sunday, March 8, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, March 8, 2026, 3:00 am local daylight time instead. Standard time ends annually on the second Sunday of March.
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