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IRST/IRDT
Iran Standard Time
GMT +3:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
IRDT is not used on this date
This converter uses IRST (GMT +3:30), the offset Tehran uses on this date. Open the IRST converter.
TFT
French Southern and Antarctic Time
GMT +5
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

IRST is 1 hour and 30 minutes behind TFT year-round.

Working hours of 9:00 am to 5:00 pm in IRST correspond to 10:30 am to 6:30 pm in TFT.

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

Time Difference

Iran Standard Time is 1 hour and 30 minutes behind French Southern and Antarctic Time
3:30 pm15:30 in IRST is 5:00 pm17:00 in TFT

IRST to TFT call time
Best time for a conference call or a meeting is between 9am-3:30pm in IRST which corresponds to 10:30am-5pm in TFT

3:30 pm15:30 Iran Standard Time (IRST). Offset UTC +3:30 hours
5:00 pm17:00 French Southern and Antarctic Time (TFT). Offset UTC +5:00 hours

3:30 pm15:30 IRST / 5:00 pm17:00 TFT

IRSTTFT
12am (midnight)1:30 am
1am2:30 am
2am3:30 am
3am4:30 am
4am5:30 am
5am6:30 am
6am7:30 am
7am8:30 am
8am9:30 am
9am10:30 am
10am11:30 am
11am12:30 pm
12pm (noon)1:30 pm
1pm2:30 pm
2pm3:30 pm
3pm4:30 pm
4pm5:30 pm
5pm6:30 pm
6pm7:30 pm
7pm8:30 pm
8pm9:30 pm
9pm10:30 pm
10pm11:30 pm
11pm12:30 am
00:0001:30
01:0002:30
02:0003:30
03:0004:30
04:0005:30
05:0006:30
06:0007:30
07:0008:30
08:0009:30
09:0010:30
10:0011:30
11:0012:30
12:0013:30
13:0014:30
14:0015:30
15:0016:30
16:0017:30
17:0018:30
18:0019:30
19:0020:30
20:0021:30
21:0022:30
22:0023:30
23:0000:30

Iran Daylight Time

Offset: IRDT is 4 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia

IRDT Time Zone Geo Map
IRDT timezone map

IRDT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0430 - basic
  • +04:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0430 - sign character (+) followed by a four digit time providing hours (04) and minutes (30) of the offset. Indicates an offset of four hours and thirty minutes to the east of the zero meridian.
Time zones with the GMT +4:30 offset:
  • AFT - Afghanistan Time
  • IRDT - Iran Daylight Time

French Southern and Antarctic Time

Offset: TFT is 5 hours ahead Greenwich Mean Time (GMT) and is used in Indian Ocean

Countries using this time zone: French S. Terr.

Principal Cities: The largest city in the TFT time zone is Port aux Francais in French Southern Territories, with about 45 people.

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

TFT Time Zone Geo Map
TFT timezone map

TFT representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +05 - basic short
  • +0500 - basic
  • +05:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0500 - sign character (+) followed by a four digit time providing hours (05) and minutes (00) of the offset. Indicates an offset of five hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Echo - Military abbreviation for TFT
  • E - short form of 'Echo'
Time zones with the GMT +5 offset:
  • AMST - Armenia Summer Time
  • AQTT - Aqtobe Time
  • AZST - Azerbaijan Summer Time
  • E - Echo Time Zone
  • MAWT - Mawson Time
  • MVT - Maldives Time
  • ORAT - Oral Time
  • PKT - Pakistan Standard Time
  • TFT - French Southern and Antarctic Time
  • TJT - Tajikistan Time
  • TMT - Turkmenistan Time
  • UZT - Uzbekistan Time
  • YEKT - Yekaterinburg Time
  • HMT - Heard and McDonald Islands Time