HST/HDT
Hawaii Standard Time
GMT -10
HDT automatically adjusted to HST time zone, that is in use
MT
Marquesas Time
GMT -9

Time Difference

Hawaii Standard Time is 0 hours and 30 minutes behind Marquesas Time
9:30 pm21:30 in HST is 10:00 pm22:00 in MT

HDT to MT call time
Best time for a conference call or a meeting is between 8:30am-6pm in HDT which corresponds to 8am-5:30pm in MT

9:30 pm21:30 Hawaii Standard Time (HST). Offset UTC -10:00 hours
10:00 pm22:00 Marquesas Time (MT). Offset UTC -9:30 hours

9:30 pm21:30 HST / 10:00 pm22:00 MT

HST MT
12am (midnight) 12:30 am
1am 1:30 am
2am 2:30 am
3am 3:30 am
4am 4:30 am
5am 5:30 am
6am 6:30 am
7am 7:30 am
8am 8:30 am
9am 9:30 am
10am 10:30 am
11am 11:30 am
12pm (noon) 12:30 pm
1pm 1:30 pm
2pm 2:30 pm
3pm 3:30 pm
4pm 4:30 pm
5pm 5:30 pm
6pm 6:30 pm
7pm 7:30 pm
8pm 8:30 pm
9pm 9:30 pm
10pm 10:30 pm
11pm 11:30 pm
0:00 0:30
1:00 1:30
2:00 2:30
3:00 3:30
4:00 4:30
5:00 5:30
6:00 6:30
7:00 7:30
8:00 8:30
9:00 9:30
10:00 10:30
11:00 11:30
12:00 12:30
13:00 13:30
14:00 14:30
15:00 15:30
16:00 16:30
17:00 17:30
18:00 18:30
19:00 19:30
20:00 20:30
21:00 21:30
22:00 22:30
23:00 23:30

Hawaii Daylight Time

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

Countries: It is used in following countries: 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 nine hour and zero minutes time differences 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

Marquesas Time

Offset: MT is 9 hours and 30 minutes behind Greenwich Mean Time (GMT) and is used in Pacific

MT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -0930 - basic
  • -09:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0930 - sign character (-) followed by a four digit time providing hours (09) and minutes (30) of the offset. Indicates nine hour and thirty minutes time differences to the west of the zero meridian.
MT Abbreviation: Several time zones share MT abbreviation and it could refer to these time zones
  • Myanmar Time - UTC +6:30
  • Maldives Time - UTC +5
  • Marquesas Time - UTC -9