EDT
Eastern Daylight Time
GMT -4
JST
Japan Standard Time
GMT +9

Time Difference

Eastern Daylight Time is 13 hours behind of Japan Standard Time
So 3:00 pm15:00 in EDT is 4:00 am04:00 in JST

3:00 pm15:00 Eastern Daylight Time (EDT). Offset UTC -4:00 hours
4:00 am04:00 Japan Standard Time (JST). Offset UTC +9:00 hours

3:00 pm15:00 EDT / 4:00 am04:00 JST

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

Eastern Daylight Time

Offset: EDT is 4 hours behind Greenwich Mean Time (GMT) and is used in North America

Countries: It is used in following countries: Bahamas, Canada, Haiti, Turks & Caicos Is, United States

Principal Cities: The largest city in the EDT timezone is New York City from USA with population about 8.175 million people. Other major cities in the area are Toronto, Montreal, Brooklyn, Borough of Queens

Daylight Saving: Eastern Daylight Time (EDT) is a daylight saving/summer timezone, however during winter some places switch clocks for one hour back and observe Eastern Standard Time (EST).

Start: Eastern Daylight Time (EDT) started and clocks were set one hour forward on Sunday, 08 March 2020, at 2:00 (2:00 am) local time.

End: Eastern Daylight Time (EDT) ends and clocks are set one hour back on Sunday, 01 November 2020, at 2:00 (2:00 am) local time.

French: HAE - Heure Avancée de l'Est

Spanish: EDT - Tiempo de verano del Este, ET - Zona Sureste

EDT Time Zone Geo Map
EDT timezone map
EDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • -04 - basic short
  • -0400 - basic
  • -04:00 - extended

Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • -0400 - sign character (-) followed by a four digit time providing hours (04) and minutes (00) of the offset. Indicates four 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
  • Quebec - Military abbreviation for EDT
  • Q - short form of 'Quebec'

IANA/Olson: Reflects EDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • America/Detroit
  • America/Fort_Wayne
  • America/Grand_Turk
  • America/Indiana/Indianapolis
  • America/Indiana/Marengo
  • America/Indiana/Petersburg
  • America/Indiana/Vevay
  • America/Indiana/Vincennes
  • America/Indiana/Winamac
  • America/Indianapolis
  • America/Iqaluit
  • America/Kentucky/Louisville
  • America/Kentucky/Monticello
  • America/Louisville
  • America/Montreal
  • America/Nassau
  • America/New_York
  • America/Nipigon
  • America/Pangnirtung
  • America/Port-au-Prince
  • America/Thunder_Bay
  • America/Toronto
  • Canada/Eastern
  • EST5EDT
  • US/East-Indiana
  • US/Eastern
  • US/Michigan

Time zones with the GMT -4 offset:

  • AST - Atlantic Standard Time
  • EDT - Eastern Daylight Time
  • AMT - Amazon Time
  • BOT - Bolivia Time
  • CDT - Cuba Daylight Time
  • CLT - Chile Standard Time
  • FKT - Falkland Island Time
  • GYT - Guyana Time
  • PYT - Paraguay Time
  • Q - Quebec Time Zone
  • VET - Venezuelan Standard Time
  • -04 -


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 -