IRST
Iran Standard Time
GMT +3:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
AMT
Armenia Time
GMT +4
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

IRST is 30 minutes behind AMT. IRST uses GMT +3:30, and AMT uses GMT +4 for this comparison.

For example, 3:30 pm IRST is 4:00 pm AMT. Use the converter above to adjust the date or time and create a shareable meeting link.

Best meeting overlap: 9am-4:30pm IRST, which is 9:30am-5pm AMT.

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

Time Difference

Iran Standard Time is 0 hours and 30 minutes behind Armenia Time
3:30 pm15:30 in IRST is 4:00 pm16:00 in AMT

IRST to AMT call time
Best time for a conference call or a meeting is between 9am-4:30pm in IRST which corresponds to 9:30am-5pm in AMT

3:30 pm15:30 Iran Standard Time (IRST). Offset UTC +3:30 hours
4:00 pm16:00 Armenia Time (AMT). Offset UTC +4:00 hours

3:30 pm15:30 IRST / 4:00 pm16:00 AMT

IRSTAMT
12am (midnight)12:30 am
1am1:30 am
2am2:30 am
3am3:30 am
4am4:30 am
5am5:30 am
6am6:30 am
7am7:30 am
8am8:30 am
9am9:30 am
10am10:30 am
11am11:30 am
12pm (noon)12:30 pm
1pm1:30 pm
2pm2:30 pm
3pm3:30 pm
4pm4:30 pm
5pm5:30 pm
6pm6:30 pm
7pm7:30 pm
8pm8:30 pm
9pm9:30 pm
10pm10:30 pm
11pm11:30 pm
00:0000:30
01:0001:30
02:0002:30
03:0003:30
04:0004:30
05:0005:30
06:0006:30
07:0007:30
08:0008:30
09:0009:30
10:0010:30
11:0011:30
12:0012:30
13:0013:30
14:0014:30
15:0015:30
16:0016:30
17:0017:30
18:0018:30
19:0019:30
20:0020:30
21:0021:30
22:0022:30
23:0023:30

Iran Standard Time

Offset: IRST is 3 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Asia

Countries using this time zone: Iran

Principal Cities: The largest city in the IRST time zone is Tehran in Iran, with about 7.153 million people. Other major cities in this time zone include Mashhad, Isfahan, Karaj, Tabriz.

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

IRST Time Zone Geo Map
IRST timezone map

IRST representations, usage and related time zones

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +0330 - basic
  • +03:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +0330 - sign character (+) followed by a four digit time providing hours (03) and minutes (30) of the offset. Indicates an offset of three hours and thirty minutes to the east of the zero meridian.

Armenia Time

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

Countries using this time zone: Armenia

Principal Cities: The largest city in the AMT time zone is Yerevan in Armenia, with about 1.093 million people. Other major cities in this time zone include Gyumri, Vanadzor, Ejmiatsin, Hrazdan.

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

AMT 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 an offset of four hours to the east of the zero meridian.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Delta - Military abbreviation for AMT
  • D - short form of 'Delta'
AMT Abbreviation: Several time zones share AMT abbreviation and it could refer to these time zones
  • Armenia Time - UTC +4
  • Amazon Time - UTC -4
Time zones with the GMT +4 offset:
  • KUYT - Kuybyshev Time
  • MSD - Moscow Daylight Time
  • SAMT - Samara Time
  • AMT - Armenia Time
  • AZT - Azerbaijan Time
  • D - Delta Time Zone
  • GET - Georgia Standard Time
  • GST - Gulf Standard Time
  • MUT - Mauritius Time
  • RET - Reunion Time
  • SCT - Seychelles Time