Z
Zulu Time Zone
GMT +0
HST
Hawaii Standard Time
GMT -10
Hawaii, USA
HST

Time Difference

Zulu Time Zone is 10 hours ahead of Hawaii Standard Time and 10 hours ahead of HST (Hawaii Standard Time)
7:30 pm19:30 in Z is 9:30 am09:30 in HST and is 9:30 am09:30 in Honolulu, HI, USA

Z to HST call time
Best time for a conference call or a meeting is between 6pm-8pm in Z which corresponds to 8am-10am in HST
Z to Honolulu call time
Best time for a conference call or a meeting is between 6pm-8pm in Z which corresponds to 8am-10am in Honolulu

7:30 pm19:30 Zulu Time Zone (Z). Offset UTC 0:00 hours
9:30 am09:30 Hawaii Standard Time (HST). Offset UTC -10:00 hours
9:30 am09:30 HST (Hawaii Standard Time) (Honolulu, HI, USA). Offset UTC -10:00 hours

7:30 pm19:30 Z / 9:30 am09:30 HST / 9:30 am09:30 Honolulu, HI, USA

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

Zulu Time Zone

Offset: Z is 0 hours ahead Greenwich Mean Time (GMT) and is used in Military

Greenwich Mean Time (GMT) originally referred to the mean solar time at the Royal Observatory in Greenwich, London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, and in casual use for the most parts it is the same. In military GMT is known as Zulu time.Greenwich Mean Time was the same as Universal Time (UT), until the introduction of UTC in 1972 a standard astronomical concept used in many technical fields.

Z representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • Z - is the zone designator for the zero UTC/GMT offset, also known as 'Zulu' time
  • +00 - basic short
  • +0000 - basic
  • +00:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0000 - sign character (+) followed by a four digit time providing hours (00) and minutes (00) of the offset. Indicates zero hour and zero minutes time differences of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Zulu - Military abbreviation for Z
  • Z - short form of 'Zulu'
Time zones with the GMT +0 offset:
  • EGST - Eastern Greenland Summer Time
  • GMT - Greenwich Mean Time
  • WET - Western European Time
  • AZOST - Azores Summer Time
  • UTC - Universal Time Coordinated
  • WT - Western Sahara Standard Time
  • Z - Zulu Time Zone

Hawaii Standard Time

Offset: HST is 10 hours behind Greenwich Mean Time (GMT) and is used in Pacific

Countries: It is used in following countries: United States

Principal Cities: The largest city in the HST timezone is Honolulu from USA with population about 371,657 people. Other major cities in the area are Pearl City, Hilo, Kailua, Waipahu

Daylight Saving: Hawaii Standard Time (HST) is not adjusted for daylight saving therefore HST remains the same through out the year. This means, unlike some time zones where the clock is set forward by one hour every summer and backward by one hour during winter to adjust for daylight saving, Hawaii Standard Time remains the same

HST Time Zone Geo Map
HST timezone map

HST 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 HST
  • W - short form of 'Whiskey'
IANA/Olson: Reflects HST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Adak
  • America/Atka
  • HST
  • Pacific/Honolulu
  • Pacific/Johnston
  • US/Aleutian
  • US/Hawaii
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

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
371,657
Currency
Dollar (USD)
Geographic Coordinates
21° 18' N Latitude / 157° 51' W Longitude
International Dialing Code
+1