UTC
Universal Time Coordinated
GMT +0
JST
Japan Standard Time
GMT +9

Time Difference

Universal Time Coordinated is 9 hours behind of Japan Standard Time
11:00 pm23:00 in UTC is 8:00 am08:00 in JST

UTC to JST call time
Best time for a conference call or a meeting is between 8am-10am in UTC which corresponds to 5pm-7pm in JST

11:00 pm23:00 Universal Time Coordinated (UTC). Offset UTC 0:00 hours
8:00 am08:00 Japan Standard Time (JST). Offset UTC +9:00 hours

11:00 pm23:00 UTC / 8:00 am08:00 JST

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

Universal Time Coordinated

Offset: UTC is 0 hours ahead Greenwich Mean Time (GMT) and is used in Universal

Coordinated Universal Time (UTC) is the world time standard that regulates clocks and time. It is successor to Greenwich Mean Time (GMT). For casual use, UTC is the same as GMT, but is used by the scientific community.
UTC is the time standard commonly used across the world since 1972. It is used in many technical fields, like aviation industry and meteorologists, also used to synchronize time across internet networks.

UTC 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 UTC
  • Z - short form of 'Zulu'
IANA/Olson: Reflects UTC time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Etc/UCT
  • Etc/UTC
  • Etc/Universal
  • Etc/Zulu
  • UCT
  • UTC
  • Universal
  • 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
  • GMT - GMT

Japan Standard Time

Offset: JST is 9 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: Japan

Principal Cities: The largest city in the JST timezone is Tokyo from Japan with population about 8.337 million people. Other major cities in the area are Yokohama, Osaka shi, Nagoya shi, Sapporo

Daylight Saving: Japan Standard Time (JST) is not adjusted for daylight saving therefore JST 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, Japan Standard Time remains the same

JST Time Zone Geo Map
JST timezone map

JST 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 east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • India - Military abbreviation for JST
  • I - short form of 'India'
IANA/Olson: Reflects JST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Tokyo
  • Japan
Time zones with the GMT +9 offset:
  • AWDT - Australian Western Daylight Time
  • CHOST - Choibalsan Summer Time
  • I - India Time Zone
  • IRKST - Irkutsk Summer Time
  • JST - Japan Standard Time
  • KST - Korea Standard Time
  • PWT - Palau Time
  • TLT - East Timor Time
  • ULAST - Ulaanbaatar Summer Time
  • WIT - Eastern Indonesian Time
  • YAKT - Yakutsk Time
  • +09 -