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Honolulu to HAST Time Converter

Updating current time…
Honolulu
Hawaii, USA
HST
12am
3am
6am
9am
12pm
3pm
6pm
9pm
HAST
Hawaii-Aleutian Standard Time
GMT -10
12am
3am
6am
9am
12pm
3pm
6pm
9pm
HAST is not used on this date
This converter keeps HAST at GMT -10. Adak uses HDT (GMT -9) on this date. Open the HDT converter.

Quick answers

Selected conversion

2:00 am02:00 HST (UTC-10), Oct 12, 2026 = 2:00 am02:00 HAST (UTC-10), Oct 12, 2026

Honolulu and HAST have the same local time.

How the time difference changes

Honolulu and HAST have the same time year-round.

Working hours of 9:00 am to 5:00 pm in Honolulu correspond to 9:00 am to 5:00 pm in HAST.Working hours of 09:00 to 17:00 in Honolulu correspond to 09:00 to 17:00 in HAST.

Compare Honolulu time with HAST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.

Time Difference

HST (Hawaii Standard Time) and Hawaii-Aleutian Standard Time have the same local time.
2:00 am02:00 in Honolulu, HI, USA is 2:00 am02:00 in HAST

Honolulu to HAST call time
Best time for a conference call or a meeting is between 9am-5pm09:00-17:00 in Honolulu which corresponds to 9am-5pm09:00-17:00 in HAST

2:00 am02:00 HST (Hawaii Standard Time) (Honolulu, HI, USA). Offset UTC -10:00 hours
2:00 am02:00 Hawaii-Aleutian Standard Time (HAST). Offset UTC -10:00 hours

2:00 am02:00 Honolulu, HI, USA / 2:00 am02:00 HAST

Honolulu, HI, USAHAST
12:00am12:00am
1:00am1:00am
2:00am2:00am
3:00am3:00am
4:00am4:00am
5:00am5:00am
6:00am6:00am
7:00am7:00am
8:00am8:00am
9:00am9:00am
10:00am10:00am
11:00am11:00am
12:00pm12:00pm
1:00pm1:00pm
2:00pm2:00pm
3:00pm3:00pm
4:00pm4:00pm
5:00pm5:00pm
6:00pm6:00pm
7:00pm7:00pm
8:00pm8:00pm
9:00pm9:00pm
10:00pm10:00pm
11:00pm11:00pm
00:0000:00
01:0001:00
02:0002:00
03:0003:00
04:0004:00
05:0005:00
06:0006:00
07:0007:00
08:0008:00
09:0009:00
10:0010:00
11:0011:00
12:0012:00
13:0013:00
14:0014:00
15:0015:00
16:0016:00
17:0017:00
18:0018:00
19:0019:00
20:0020:00
21:0021:00
22:0022:00
23:0023:00

Honolulu Information

Time Zone

Abbreviation / Name
HST - Hawaii Standard Time
UTC / GMT Offset
-10:00 hours during Hawaii Standard Time, currently in use.

Honolulu Facts

Country
USA
State
Hawaii
Alternative Names
Anorourou, Chonoloulou, Gana-Rura, Gana-ruru, Ganalulu, Ganaruro, Ganaruru, Gonolulu, HNL, Hana-Rura, Hana-Ruru, Hana-ruru, Honoloulou, Honolulu, Honolulú, Honolúlú, Honoruru, Khonolulu, Than-hiong-san, Thàn-hiông-sân, hanalulu, hanululu, honalulu, honollullu, honolulu, honoruru, hwnwlwlw, tan xiang shan, Χονολουλού, Ганалулу, Гонолулу, Хонолулу, Һонолулу, Հոնոլուլու, האנאלולו, הונולולו, هونولولو, ہwnwlwlw ہwayy, ہونولولو, ہونولولو، ہوائی, हानलूलू, होनालुलु, होनोलुलु, होनोलूलू, হনলুলু, হনুলুলু, ହନଲୁଲୁ, ஹொனலுலு, ಹೊನೊಲುಲು, โฮโนลูลู, ཧོ་ནོ་ལུ་ལུ།, ဟိုနိုလူလူမြို့, ჰონოლულუ, ሆኖሉሉ, ホノルル, 檀香山, 호놀룰루
Population
350,964
Currency
Dollar (USD)
Geographic Coordinates
21° 18' N Latitude / 157° 51' W Longitude
International Dialing Code
+1

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).

Daylight saving time clock moves forward for one hourEnd: 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.

Daylight saving time clock moves back for one hourStart: 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 upcoming clock changes worldwide.

HAST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -10 - basic short
  • -1000 - basic
  • -10:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -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.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Whiskey - Military abbreviation for HAST
  • W - short form of 'Whiskey'
Time zones with the GMT -10 offset:
  • HAST - Hawaii-Aleutian Standard Time
  • CKT - Cook Island Time
  • HST - Hawaii Standard Time
  • TAHT - Tahiti Time
  • W - Whiskey Time Zone
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT