Israel Standard Time
GMT +2
IDT automatically adjusted to IST time zone, that is in use

Time Difference

IST (Iran Standard Time) is 1 hour and 30 minutes ahead of Israel Standard Time
8:00 pm20:00 in Tehran, Iran is 6:30 pm18:30 in IST

Tehran to IDT call time
Best time for a conference call or a meeting is between 8:30am-6pm in Tehran which corresponds to 8am-5:30pm in IDT

8:00 pm20:00 IST (Iran Standard Time) (Tehran, Iran). Offset UTC +3:30 hours
6:30 pm18:30 Israel Standard Time (IST). Offset UTC +2:00 hours

8:00 pm20:00 Tehran, Iran / 6:30 pm18:30 IST

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

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

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
Rial (IRR)
Geographic Coordinates
35° 41' N Latitude / 51° 25' E Longitude
International Dialing Code

Israel Daylight Time

Offset: IDT is 3 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries: It is used in following countries: Israel

Principal Cities: The largest city in the IDT timezone is Jerusalem from Israel with population about 801,000 people. Other major cities in the area are West Jerusalem, Haifa, Tel Aviv, Ashdod

IDT Time Zone Geo Map
IDT timezone map

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

Daylight saving time clock moves back for one hour from 2am to 1amEnd: Israel Daylight Time (IDT) has ended on Sunday, October 30, 2022 at 2:00 am local time and clocks were set one hour back to Sunday, October 30, 2022, 1:00 am local standard time instead. Daylight saving ends annually the on last Sunday of October

Daylight saving time clock moves forward for one hour from 2am to 3amStart: Israel Daylight Time (IDT) starts on Friday, March 24, 2023 at 2:00 am local time and clocks are set one hour forward to Friday, March 24, 2023, 3:00 am. Daylight saving starts annually the on last Sunday of March

IDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +03 - basic short
  • +0300 - basic
  • +03:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0300 - sign character (+) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates three 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
  • Charlie - Military abbreviation for IDT
  • C - short form of 'Charlie'
IANA/Olson: Reflects IDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Asia/Jerusalem
  • Asia/Tel_Aviv
  • Israel
IDT Abbreviation: Several time zones share IDT abbreviation and it could refer to these time zones
  • Israel Daylight Time - UTC +3
  • Iran Daylight Time - UTC +4:30
Time zones with the GMT +3 offset:
  • EEST - Eastern European Summer Time
  • MSK - Moscow Standard Time
  • AST - Arabia Standard Time
  • C - Charlie Time Zone
  • EAT - Eastern Africa Time
  • FET - Further Eastern European Time
  • IDT - Israel Daylight Time
  • TRT - Turkey Time