HAST
Hawaii-Aleutian Standard Time
GMT -10
Tonga
TST

Time Difference

Hawaii-Aleutian Standard Time is 23 hours behind TST (Tonga Standard Time)
12:30 pm12:30 in HAST is 11:30 am11:30 in Nuku'alofa, Tonga

HAST to Nuku'alofa call time
Best time for a conference call or a meeting is between 1:30am-3:30am in HAST which corresponds to 12:30pm-2:30pm in Nuku'alofa

12:30 pm12:30 Hawaii-Aleutian Standard Time (HAST). Offset UTC -10:00 hours
11:30 am11:30 TST (Tonga Standard Time) (Nuku'alofa, Tonga). Offset UTC +13:00 hours

12:30 pm12:30 HAST / 11:30 am11:30 Nuku'alofa, Tonga

HAST Nuku'alofa, Tonga
12am (midnight) 11pm
1am 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
0:00 23:00
1:00 0:00
2:00 1:00
3:00 2:00
4:00 3:00
5:00 4:00
6:00 5:00
7:00 6:00
8:00 7:00
9:00 8:00
10:00 9:00
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

Hawaii-Aleutian Standard Time

Offset: HAST is 10 hours behind Greenwich Mean Time (GMT) and is used in North America

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 ten 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
  • 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

Nuku'alofa Information

Time Zone

Abbreviation / Name
TST - Tonga Standard Time
TOT - Tonga Time
UTC / GMT Offset
+13:00 hours during Tonga Standard Time, currently in use.
+13:00 hours during Tonga Time.
Daylight Saving Time Change
0:00 hours - DST is NOT in use
Daylight Saving Time Starts
Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Also called Fall Back or switch to Winter Time.

Nuku'alofa Facts

Country
Tonga
Alternative Names
Niukalofa, Noukoualopha, Nucualofa, Nukalofa, Nuku'alofa, Nuku`alofa, Nuku`aloia, Nukualofa, Nukuʻalofa, Nuku‘alofa, Nuku‘aloia, Nuku’alofa, TBU, nu ku a luo fa, nu kuxalofa, nukuallopa, nukuarofa, Νουκουαλόφα, Нукуалофа, נוקואלופה, นูกูอะโลฟา, ኑኩአሎፋ, ヌクアロファ, 努库阿洛法, 努庫阿洛發, 누쿠알로파
Population
22,400
Currency
Pa'anga (TOP)
Geographic Coordinates
21° 08' S Latitude / 175° 12' W Longitude
International Dialing Code
+676