IDT to IRST Converter
Quick answers
Selected conversion
3:00 pm15:00 IDT (UTC+3), Oct 8, 2026 = 3:30 pm15:30 IRST (UTC+3:30), Oct 8, 2026
IDT is 30 minutes behind IRST.
IDT and IRST examples
These examples always use IDT (UTC+3) and IRST (UTC+3:30). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
IDT is 30 minutes behind IRST.
How the time difference changes
For most of the year, IDT is 30 minutes behind IRST. At other times of the year, IST is 1 hour and 30 minutes behind IRST.
For most of the year, working hours of 9:00 am to 5:00 pm in IDT correspond to 9:30 am to 5:30 pm in IRST. At other times of the year, working hours of 9:00 am to 5:00 pm in IST correspond to 10:30 am to 6:30 pm in IRST.For most of the year, working hours of 09:00 to 17:00 in IDT correspond to 09:30 to 17:30 in IRST. At other times of the year, working hours of 09:00 to 17:00 in IST correspond to 10:30 to 18:30 in IRST.
Compare IDT time with IRST time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Israel Daylight Time is 30 minutes behind Iran Standard Time.
3:00 pm15:00 in IDT is 3:30 pm15:30 in IRST
IDT to IRST call time
Best time for a conference call or a meeting is between 9am-4:30pm09:00-16:30 in IDT which corresponds to 9:30am-5pm09:30-17:00 in IRST
3:00 pm15:00 Israel Daylight Time (IDT). Offset UTC +3:00 hours
3:30 pm15:30 Iran Standard Time (IRST). Offset UTC +3:30 hours
3:00 pm15:00 IDT / 3:30 pm15:30 IRST
| IDT | IRST |
|---|---|
| 12:00am | 12:30am |
| 1:00am | 1:30am |
| 2:00am | 2:30am |
| 3:00am | 3:30am |
| 4:00am | 4:30am |
| 5:00am | 5:30am |
| 6:00am | 6:30am |
| 7:00am | 7:30am |
| 8:00am | 8:30am |
| 9:00am | 9:30am |
| 10:00am | 10:30am |
| 11:00am | 11:30am |
| 12:00pm | 12:30pm |
| 1:00pm | 1:30pm |
| 2:00pm | 2:30pm |
| 3:00pm | 3:30pm |
| 4:00pm | 4:30pm |
| 5:00pm | 5:30pm |
| 6:00pm | 6:30pm |
| 7:00pm | 7:30pm |
| 8:00pm | 8:30pm |
| 9:00pm | 9:30pm |
| 10:00pm | 10:30pm |
| 11:00pm | 11:30pm |
| 00:00 | 00:30 |
| 01:00 | 01:30 |
| 02:00 | 02:30 |
| 03:00 | 03:30 |
| 04:00 | 04:30 |
| 05:00 | 05:30 |
| 06:00 | 06:30 |
| 07:00 | 07:30 |
| 08:00 | 08:30 |
| 09:00 | 09:30 |
| 10:00 | 10:30 |
| 11:00 | 11:30 |
| 12:00 | 12:30 |
| 13:00 | 13:30 |
| 14:00 | 14:30 |
| 15:00 | 15:30 |
| 16:00 | 16:30 |
| 17:00 | 17:30 |
| 18:00 | 18:30 |
| 19:00 | 19:30 |
| 20:00 | 20:30 |
| 21:00 | 21:30 |
| 22:00 | 22:30 |
| 23:00 | 23:30 |
Israel Daylight Time
Offset: IDT is 3 hours ahead Greenwich Mean Time (GMT) and is used in Asia
Countries using this time zone: Israel
Principal Cities: The largest city in the IDT time zone is Jerusalem in Israel, with about 971,800 people. Other major cities in this time zone include Tel Aviv, West Jerusalem, Haifa, Ashdod.
Daylight Saving: Israel Daylight Time (IDT) is a daylight saving/summer time zone. During winter, some places set clocks back one hour and observe Israel Standard Time (IST).
Start: Israel Daylight Time (IDT) started on Friday, March 27, 2026 at 2:00 am02:00 local time and clocks were set one hour forward to Friday, March 27, 2026, 3:00 am03:00. Daylight saving starts annually on the last Friday of March.
End: Israel Daylight Time (IDT) ends on Sunday, October 25, 2026 at 2:00 am02:00 local time and clocks are set one hour back to Sunday, October 25, 2026, 1:00 am01:00 local standard time instead. Daylight saving ends annually on the last Sunday of October.
IDT representations, usage and related time zones
- +03 - basic short
- +0300 - basic
- +03:00 - extended
- +0300 - sign character (+) followed by a four digit time providing hours (03) and minutes (00) of the offset. Indicates an offset of three hours to the east of the zero meridian.
- Charlie - Military abbreviation for IDT
- C - short form of 'Charlie'
- Asia/Jerusalem
- Asia/Tel_Aviv
- Israel
- 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
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; see upcoming clock changes worldwide.
IRST representations, usage and related time zones
- +0330 - basic
- +03:30 - extended
- +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.