Iran
IST
WIB
Western Indonesian Time
GMT +7
EST/EDT
Eastern Standard Time
GMT -5
EDT automatically adjusted to EST time zone, that is in use

Time Difference

IST (Iran Standard Time) is 3 hours and 30 minutes behind Western Indonesian Time and 8 hours and 30 minutes ahead of Eastern Standard Time
9:00 am09:00 in Tehran, Iran is 12:30 pm12:30 in WIB and is 12:30 am00:30 in EST

Tehran to WIB call time
Best time for a conference call or a meeting is between 8am-2:30pm in Tehran which corresponds to 11:30am-6pm in WIB
Tehran to EDT call time
Best time for a conference call or a meeting is between 3:30pm-6pm in Tehran which corresponds to 8am-10:30am in EDT

9:00 am09:00 IST (Iran Standard Time) (Tehran, Iran). Offset UTC +3:30 hours
12:30 pm12:30 Western Indonesian Time (WIB). Offset UTC +7:00 hours
12:30 am00:30 Eastern Standard Time (EST). Offset UTC -5:00 hours

9:00 am09:00 Tehran, Iran / 12:30 pm12:30 WIB / 12:30 am00:30 EST

Tehran, Iran WIB EST
12am (midnight) 3:30 am 3:30 pm
1am 4:30 am 4:30 pm
2am 5:30 am 5:30 pm
3am 6:30 am 6:30 pm
4am 7:30 am 7:30 pm
5am 8:30 am 8:30 pm
6am 9:30 am 9:30 pm
7am 10:30 am 10:30 pm
8am 11:30 am 11:30 pm
9am 12:30 pm 12:30 am
10am 1:30 pm 1:30 am
11am 2:30 pm 2:30 am
12pm (noon) 3:30 pm 3:30 am
1pm 4:30 pm 4:30 am
2pm 5:30 pm 5:30 am
3pm 6:30 pm 6:30 am
4pm 7:30 pm 7:30 am
5pm 8:30 pm 8:30 am
6pm 9:30 pm 9:30 am
7pm 10:30 pm 10:30 am
8pm 11:30 pm 11:30 am
9pm 12:30 am 12:30 pm
10pm 1:30 am 1:30 pm
11pm 2:30 am 2:30 pm
0:00 3:30 15:30
1:00 4:30 16:30
2:00 5:30 17:30
3:00 6:30 18:30
4:00 7:30 19:30
5:00 8:30 20:30
6:00 9:30 21:30
7:00 10:30 22:30
8:00 11:30 23:30
9:00 12:30 0:30
10:00 13:30 1:30
11:00 14:30 2:30
12:00 15:30 3:30
13:00 16:30 4:30
14:00 17:30 5:30
15:00 18:30 6:30
16:00 19:30 7:30
17:00 20:30 8:30
18:00 21:30 9:30
19:00 22:30 10:30
20:00 23:30 11:30
21:00 0:30 12:30
22:00 1:30 13:30
23:00 2:30 14:30

Tehran Information

Time Zone

Abbreviation / Name
IST - Iran Standard Time
IRDT - Iran Daylight Time
UTC / GMT Offset
+3:30 hours during Iran Standard Time, currently in use.
+4:30 hours during Iran Daylight Time.
Daylight Saving Time Change
+1:00 hour - DST is NOT in use
Daylight Saving Time Starts
Daylight saving time clock moves forward for one hour from 12am to 1am March 22 at 00:00 local time. DST starts annually on the same date and time.. Clocks are turned forward 1 hour to Tuesday, March 22, 2022, 1:00 am local daylight time instead. Also called Spring Forward or Summer Time.
Daylight Saving Time Ends
Daylight saving time clock moves back for one hour from 12am to 11pm September 21 at 00:00 local time. DST ends annually on the same date and time.. Clocks are turned backward 1 hour to Wednesday, September 21, 2022, 11:00 pm local standard time instead. Also called Fall Back or switch to Winter Time.

Tehran Facts

Country
Iran
Alternative Names
THR, Taekhran, Tahran, Techerane, Teera, Teerao, Teerã, Teerão, Tegeran, Teheran, Teherana, Teheranas, Teherano, Teherán, Teherāna, Tehran, Tehrano, Tekheran, Téhéran, de hei lan, teharan, teharana, tehelan, teheran, tehran, teirani, thran, thrn, thrwn, tihiran, tihran, Τεχεράνη, Тæхран, Тегеран, Техеран, Теҳрон, Թեհրան, טהראן, טהרן, تهران, تهرون, تِهران, تِهِرَن, تہران, طهران, ܛܗܪܐܢ, तेहरान, তেহরান, தெஹ்ரான், เตหะราน, ཏེ་ཧི་རན​།, თეირანი, ቴህራን, テヘラン, 德黑兰, 테헤란
Population
7,153,309
Currency
Rial (IRR)
Geographic Coordinates
35° 41' N Latitude / 51° 25' E Longitude
International Dialing Code
+98

Western Indonesian Time

Offset: WIB is 7 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: Indonesia

Principal Cities: The largest city in the WIB timezone is Jakarta from Indonesia with population about 8.54 million people. Other major cities in the area are Surabaya, Medan, Bandung, Bekasi

Daylight Saving: Western Indonesian Time (WIB) is not adjusted for daylight saving therefore WIB 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, Western Indonesian Time remains the same

WIB Time Zone Geo Map
WIB timezone map

WIB representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +07 - basic short
  • +0700 - basic
  • +07:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0700 - sign character (+) followed by a four digit time providing hours (07) and minutes (00) of the offset. Indicates seven 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
  • Golf - Military abbreviation for WIB
  • G - short form of 'Golf'
IANA/Olson: Reflects WIB time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Jakarta
  • Asia/Pontianak
Time zones with the GMT +7 offset:
  • CXT - Christmas Island Time
  • DAVT - Davis Time
  • G - Golf Time Zone
  • HOVT - Hovd Time
  • ICT - Indochina Time
  • KRAT - Krasnoyarsk Time
  • NOVST - Novosibirsk Summer Time
  • NOVT - Novosibirsk Time
  • OMSST - Omsk Summer Time
  • WIB - Western Indonesian Time

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

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

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

Daylight saving time clock moves back for one hour from 2am to 1amEnd: Eastern Daylight Time (EDT) has ended on Sunday, November 6, 2022 at 2:00 am local time and clocks were set one hour back to Sunday, November 6, 2022, 1:00 am local standard time instead. Daylight saving ends annually the on first Sunday of November

Daylight saving time clock moves forward for one hour from 2am to 3amStart: Eastern Daylight Time (EDT) starts on Sunday, March 12, 2023 at 2:00 am local time and clocks are set one hour forward to Sunday, March 12, 2023, 3:00 am. Daylight saving starts annually the on second Sunday of March

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
  • HLV - Hora Legal de Venezuela
  • PYT - Paraguay Time
  • Q - Quebec Time Zone
  • VET - Venezuelan Standard Time