YourWorldTime

JST to UTC

The gap between JST and UTC is 9 hours behind — UTC+9 against UTC+0.

Convert a time

Converted time

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Hour by hour

Computed on a date when JST is genuinely in force — using today would be wrong for half the year, because a standard-time abbreviation does not exist in summer.

JSTUTC
00:0015:00previous day
01:0016:00previous day
02:0017:00previous day
03:0018:00previous day
04:0019:00previous day
05:0020:00previous day
06:0021:00previous day
07:0022:00previous day
08:0023:00previous day
09:0000:00
10:0001:00
11:0002:00
12:0003:00
13:0004:00
14:0005:00
15:0006:00
16:0007:00
17:0008:00
18:0009:00
19:0010:00
20:0011:00
21:0012:00
22:0013:00
23:0014:00

What these abbreviations actually are

 JSTUTC
Full nameJapan Standard TimeCoordinated Universal Time
Representative zoneAsia/TokyoUTC
OffsetUTC+9UTC+0
SeasonalStandard timeStandard time
Zone changes in 202600
Other meaningsNone in common useNone in common use

Common questions

What is the difference between JST and UTC?
UTC is 9 hours behind of JST. JST means Japan Standard Time at UTC+9, and UTC means Coordinated Universal Time at UTC+0.
Which time zone does this page use for JST?
Asia/Tokyo. An abbreviation is not a time zone — it is a label a zone wears for part of the year — so every calculation here uses a named IANA zone and says which one. If you are writing code, use Asia/Tokyo rather than the string "JST".
Is JST a daylight saving abbreviation?
No. JST is the standard-time abbreviation. When daylight saving is in force, the same zone uses a different one.