HDT to MART Converter
HDT is not used on this date
This converter keeps HDT at UTC−9. Honolulu uses HST (UTC−10) on this date. Open the HST converter, or choose Honolulu, Pearl City, or Hilo for city-specific time.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
3:00 am03:00 HDT (UTC-9), Oct 24, 2026 = 2:30 am02:30 MART (UTC-9:30), Oct 24, 2026
HDT is 30 minutes ahead of MART.
HDT and MART examples
These examples always use HDT (UTC-9) and MART (UTC-9:30). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
HDT is 30 minutes ahead of MART.
How the time difference changes
HDT is 30 minutes ahead of MART year-round.
Working hours of 9:00 am to 6:00 pm in HDT correspond to 8:30 am to 5:30 pm in MART.Working hours of 09:00 to 18:00 in HDT correspond to 08:30 to 17:30 in MART.
Compare HDT time with MART time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Hawaii Daylight Time is 30 minutes ahead of Marquesas Time.
3:00 am03:00 in HDT is 2:30 am02:30 in MART
HDT to MART call time
Best time for a conference call or a meeting is between 9:30am-6pm09:30-18:00 in HDT which corresponds to 9am-5:30pm09:00-17:30 in MART
3:00 am03:00 Hawaii Daylight Time (HDT). Offset UTC -9:00 hours
2:30 am02:30 Marquesas Time (MART). Offset UTC -9:30 hours
3:00 am03:00 HDT / 2:30 am02:30 MART
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.
| HDT | MART |
|---|---|
| 11:30pm previous day | |
| 12:30am | |
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| 11:30am | |
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| 1:30pm | |
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| 5:30pm | |
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| 8:30pm | |
| 9:30pm | |
| 10:30pm | |
| 23:30 previous day | |
| 00:30 | |
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| 22:30 |
Hawaii Daylight Time
Offset: HDT is 9 hours behind Greenwich Mean Time (GMT).
Countries using this time zone: United States
Today all shaded areas are on HDT.
HDT representations, usage and related time zones
- -09 - basic short
- -0900 - basic
- -09:00 - extended
- -0900 - sign character (-) followed by a four digit time providing hours (09) and minutes (00) of the offset. Indicates an offset of nine hours to the west of the zero meridian.
- Victor - Military abbreviation for HDT
- V - short form of 'Victor'
- America/Adak
- America/Atka
- US/Aleutian
- AKST - Alaska Standard Time
- AHDT - Alaska-Hawaii Daylight Time
- HADT - Hawaii-Aleutian Daylight Time
- GAMT - Gambier Time
- HDT - Hawaii Daylight Time
- V - Victor Time Zone
Marquesas Time
Offset: MART is 9 hours and 30 minutes behind Greenwich Mean Time (GMT).
Countries using this time zone: French Polynesia
Principal Cities: The largest city in the MART time zone is Atuona in French Polynesia, with about 1,762 people. Other major cities in this time zone include Taiohae.
Daylight Saving: Clocks in Marquesas Time (MART) do not change for daylight saving time, so MART stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter; see upcoming clock changes worldwide.
MART representations, usage and related time zones
- -0930 - basic
- -09:30 - extended
- -0930 - sign character (-) followed by a four digit time providing hours (09) and minutes (30) of the offset. Indicates an offset of nine hours and thirty minutes to the west of the zero meridian.