Time in JST and IRST
The time difference between Japan Standard Time (JST) and Iran Standard Time (IRST) is 5 hours 30 minutes. Iran Standard Time is 5 hours 30 minutes behind Japan Standard Time.
This means 9am JST is 3:30am IRST and 5pm JST is 11:30am IRST.
Japan Standard Time
- The current local time in JST is 4:12 am (July 9, 2026)
- JST time zone offset is UTC+09:00
Iran Standard Time
- The current local time in IRST is 10:42 pm (July 8, 2026)
- IRST time zone offset is UTC+03:30
How to convert Japan Standard Time to Iran Standard Time?
Subtract 5 hours 30 minutes from Japan Standard Time to get Iran Standard Time.
Time in JST
00:00
Time in IRST
00:00
Use the slider above to convert Japan Standard Time to Iran Standard Time and view the day and night map at different times.
Day–night colors on the map:
Day
Civil twilight
Nautical twilight
Astronomical twilight
NightTime Conversion Chart
| JST | IRST |
|---|---|
| 12am | 6:30pm |
| 1am | 7:30pm |
| 2am | 8:30pm |
| 3am | 9:30pm |
| 4am | 10:30pm |
| 5am | 11:30pm |
| 6am | 0:30am |
| 7am | 1:30am |
| 8am | 2:30am |
| 9am | 3:30am |
| 10am | 4:30am |
| 11am | 5:30am |
| 12pm | 6:30am |
| 1pm | 7:30am |
| 2pm | 8:30am |
| 3pm | 9:30am |
| 4pm | 10:30am |
| 5pm | 11:30am |
| 6pm | 12:30pm |
| 7pm | 1:30pm |
| 8pm | 2:30pm |
| 9pm | 3:30pm |
| 10pm | 4:30pm |
| 11pm | 5:30pm |