JST
Japan Standard Time
GMT +9
Sun, Mar 14
12am
3am
6am
9am
12pm
3pm
6pm
9pm
PST
Pacific Standard Time
GMT -8
Sat, Mar 13
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

8:00 am JST (UTC+9), Mar 14, 2021 = 3:00 pm PST (UTC-8), Mar 13, 2021

JST is 17 hours ahead of PST.

JST and PST examples

These examples always use JST (UTC+9) and PST (UTC-8). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

JST is 17 hours ahead of PST.

PST uses UTC-8 during standard time. For Pacific Time that follows daylight saving time, use JST to PT. For daylight-time examples, use JST to PDT.

How the time difference changes

For most of the year, JST is 16 hours ahead of PDT. At other times of the year, JST is 17 hours ahead of PST.

For most of the year, working hours of 9:00 am to 5:00 pm in JST correspond to 5:00 pm (previous day) to 1:00 am in PDT. At other times of the year, working hours of 9:00 am to 5:00 pm in JST correspond to 4:00 pm (previous day) to 12:00 am in PST.

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

Time Difference

Japan Standard Time is 17 hours ahead of Pacific Standard Time
8:00 am08:00 in JST is 3:00 pm15:00 in PST

JST to PST call time
Best time for a conference call or a meeting is between 9am-10am in JST which corresponds to 4pm-5pm in PST (previous day)

8:00 am08:00 Japan Standard Time (JST). Offset UTC +9:00 hours
3:00 pm15:00 Pacific Standard Time (PST). Offset UTC -8:00 hours

8:00 am08:00 JST / 3:00 pm15:00 PST

JSTPST
12am (midnight)8am
1am9am
2am10am
3am11am
4am12pm (noon)
5am1pm
6am2pm
7am3pm
8am4pm
9am5pm
10am6pm
11am7pm
12pm (noon)8pm
1pm9pm
2pm10pm
3pm11pm
4pm12am (midnight)
5pm1am
6pm2am
7pm3am
8pm4am
9pm5am
10pm6am
11pm7am
00:0008:00
01:0009:00
02:0010:00
03:0011:00
04:0012:00
05:0013:00
06:0014:00
07:0015:00
08:0016:00
09:0017:00
10:0018:00
11:0019:00
12:0020:00
13:0021:00
14:0022:00
15:0023:00
16:0000:00
17:0001:00
18:0002:00
19:0003:00
20:0004:00
21:0005:00
22:0006:00
23:0007:00

Japan Standard Time

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

Countries using this time zone: Japan

Principal Cities: The largest city in the JST time zone is Tokyo in Japan, with about 9.733 million people. Other major cities in this time zone include Yokohama, Osaka shi, Nagoya shi, Sapporo.

Daylight Saving: Clocks in Japan Standard Time (JST) do not change for daylight saving time, so JST stays the same throughout the year. Other time zones may set clocks forward in summer and back in winter.

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 an offset of nine hours 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

Pacific Standard Time

Offset: PST is 8 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries using this time zone: Canada, Mexico, United States

Principal Cities: The largest city in the PST time zone is Los Angeles in the United States, with about 3.821 million people. Other major cities in this time zone include Tijuana, San Diego, Mexicali, San Jose.

French: HNP - Heure Normale du Pacifique

Spanish: PT - Tiempo del Pacífico, PT - Zona Noroeste

PST Time Zone Geo Map
PST timezone map

Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Pacific Daylight Time (PDT).

Daylight saving time clock moves forward for one hour from 2am to 3amEnd: Pacific Standard Time (PST) ended on Sunday, March 14, 2021 at 2:00 am local time and clocks were set one hour forward to Sunday, March 14, 2021, 3:00 am local daylight time instead. Standard time ends annually on the second Sunday of March.

Daylight saving time clock moves back for one hour from 2am to 1amStart: Pacific Standard Time (PST) starts on Sunday, November 7, 2021 at 2:00 am local time and clocks are set one hour back to Sunday, November 7, 2021, 1:00 am. Standard time starts annually on the first Sunday of November.

PST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -08 - basic short
  • -0800 - basic
  • -08:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0800 - sign character (-) followed by a four digit time providing hours (08) and minutes (00) of the offset. Indicates an offset of eight hours to the west of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Uniform - Military abbreviation for PST
  • U - short form of 'Uniform'
IANA/Olson: Reflects PST time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Ensenada
  • America/Los_Angeles
  • America/Santa_Isabel
  • America/Tijuana
  • America/Vancouver
  • Canada/Pacific
  • Mexico/BajaNorte
  • PST8PDT
  • US/Pacific
PST Abbreviation: Several time zones share PST abbreviation and it could refer to these time zones
  • Pacific Standard Time - UTC -8
  • Pitcairn Standard Time - UTC -8
Time zones with the GMT -8 offset:
  • AKDT - Alaska Daylight Time
  • PST - Pacific Standard Time
  • PT - Pacific Time
  • PST - Pitcairn Standard Time
  • U - Uniform Time Zone