Tehran Time to JST Converter
JST is 5 hours 30 minutes ahead of IRST. 9:00 AM IRST = 2:30 PM JST.
JST is 5 hours 30 minutes ahead of IRST. To convert Tehran Time to JST, add 5 hours 30 minutes to the Tehran Time time: 9:00 AM IRST = 2:30 PM JST.
Tehran Time (Tehran time) is used in Tehran, Iran. JST (Japan Time) is used in Japan.
Tehran Time to JST time conversion table
Tehran Time to JST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| Tehran Time | JST |
|---|---|
| 12:00 AM | 5:30 AM |
| 1:00 AM | 6:30 AM |
| 2:00 AM | 7:30 AM |
| 3:00 AM | 8:30 AM |
| 4:00 AM | 9:30 AM |
| 5:00 AM | 10:30 AM |
| 6:00 AM | 11:30 AM |
| 7:00 AM | 12:30 PM |
| Tehran Time | JST |
|---|---|
| 8:00 AM | 1:30 PM |
| 9:00 AM | 2:30 PM |
| 10:00 AM | 3:30 PM |
| 11:00 AM | 4:30 PM |
| 12:00 PM | 5:30 PM |
| 1:00 PM | 6:30 PM |
| 2:00 PM | 7:30 PM |
| 3:00 PM | 8:30 PM |
| Tehran Time | JST |
|---|---|
| 4:00 PM | 9:30 PM |
| 5:00 PM | 10:30 PM |
| 6:00 PM | 11:30 PM |
| 7:00 PM | 12:30 AM+1 |
| 8:00 PM | 1:30 AM+1 |
| 9:00 PM | 2:30 AM+1 |
| 10:00 PM | 3:30 AM+1 |
| 11:00 PM | 4:30 AM+1 |
Conversion table from Tehran Time to JST for 7 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in JST, −1 the previous day.
- ✓ marks 9 AM–5 PM in both places
- Greyed times are night in the destination (10 PM–6 AM)
How to convert Tehran Time to JST
Add 5 hours 30 minutes to the Tehran Time time to get JST.
Example: 9:00 AM IRST = 2:30 PM JST.
Across midnight: 10:00 PM IRST = 3:30 AM JST (next day). The date changes, so always check the day as well as the hour.
Time difference between Tehran Time and JST
The time difference between Tehran Time and JST is 5 hours 30 minutes all year – JST is ahead of IRST.
Tehran Time and JST during daylight saving time
- Tehran Time does not observe daylight saving time; it stays on UTC+3:30 all year.
- JST does not observe daylight saving time; it stays on UTC+9 all year.
Best time for a meeting between Tehran Time and JST
Tehran Time and JST share 2 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 11:30 AM IRST lands between 2:30 PM and 5:00 PM JST, inside working hours for both.
Tehran Time to JST FAQ
What is the time difference between Tehran Time and JST?
JST is 5 hours 30 minutes ahead of IRST all year. 9:00 AM IRST = 2:30 PM JST.
What is 9 AM Tehran Time in JST?
9:00 AM IRST is 2:30 PM JST.
What is 12 PM (noon) Tehran Time in JST?
12:00 PM IRST is 5:30 PM JST.
Is JST ahead of or behind Tehran Time?
JST is 5 hours 30 minutes ahead of IRST, so it is later in JST than in Tehran Time.
Does Tehran Time change for daylight saving time?
No. Tehran Time stays on the same offset all year, so conversions never shift for daylight saving time.
Does JST change for daylight saving time?
No. JST stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between Tehran Time and JST?
Tehran Time and JST share 2 hours 30 minutes of the 9 AM–5 PM working day. Any time between 9:00 AM and 11:30 AM IRST lands between 2:30 PM and 5:00 PM JST, inside working hours for both.
Related conversions
Convert JST to Tehran Time
Convert Tehran Time to other time zones
Convert other time zones to JST
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.