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HDT

Hawaii Daylight Time

GMT -9

12am

3am

6am

9am

12pm

3pm

6pm

9pm

HDT is not used on this date

This converter keeps HDT at GMT -9. Honolulu uses HST (GMT -10) on this date. Open the HST converter, or choose Honolulu, Pearl City, or Hilo for city-specific time.

Use this HDT Time Converter page to check current local time, UTC and GMT offset, daylight saving details, related time zones, and popular time converter links.

Hawaii Daylight Time

Offset: HDT is 9 hours behind Greenwich Mean Time (GMT) and is used in Pacific

Countries using this time zone: United States

HDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data

-09 - basic short
-0900 - basic
-09:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers

-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.

Military/NATO: Used by the U.S. military, Chinese military and others

Victor - Military abbreviation for HDT
V - short form of 'Victor'

IANA/Olson: Reflects HDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems

America/Adak
America/Atka
US/Aleutian

Time zones with the GMT -9 offset:

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