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IRST
Iran Standard Time
GMT +3:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
ORAT
Oral Time
GMT +5
12am
3am
6am
9am
12pm
3pm
6pm
9pm

Quick answers

Selected conversion

The selected date and time will appear here when the converter loads.

IRST and ORAT examples

These examples always use IRST (UTC+3:30) and ORAT (UTC+5). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.

IRST is 1 hour and 30 minutes behind ORAT.

How the time difference changes

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

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

Compare IRST time with ORAT 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 Oral Time
3:30 pm15:30 in IRST is 5:00 pm17:00 in ORAT

IRST to ORAT 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 ORAT

3:30 pm15:30 Iran Standard Time (IRST). Offset UTC +3:30 hours
5:00 pm17:00 Oral Time (ORAT). Offset UTC +5:00 hours

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

IRSTORAT
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 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.

Oral Time

Offset: ORAT is 5 hours ahead Greenwich Mean Time (GMT) and is used in Asia

Countries using this time zone: Kazakhstan

Principal Cities: The largest city in the ORAT time zone is Oral in Kazakhstan, with about 200,000 people. Other major cities in this time zone include Atyrau, Qulsary, Aqsay, Shalkar.

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

ORAT 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 ORAT
  • 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