Convert Iran Standard Time (IRST) to Japan Standard Time (JST) instantly. Free, fast and accurate time zone converter with real-time updates.
| IRST Time | JST Time |
|---|---|
| 12:00 AM IRST | 5:30 AM JST |
| 12:30 AM IRST | 6:00 AM JST |
| 1:00 AM IRST | 6:30 AM JST |
| 1:30 AM IRST | 7:00 AM JST |
| 2:00 AM IRST | 7:30 AM JST |
| 2:30 AM IRST | 8:00 AM JST |
| 3:00 AM IRST | 8:30 AM JST |
| 3:30 AM IRST | 9:00 AM JST |
| 4:00 AM IRST | 9:30 AM JST |
| 4:30 AM IRST | 10:00 AM JST |
| 5:00 AM IRST | 10:30 AM JST |
| 5:30 AM IRST | 11:00 AM JST |
| 6:00 AM IRST | 11:30 AM JST |
| 6:30 AM IRST | 12:00 PM JST |
| 7:00 AM IRST | 12:30 PM JST |
| 7:30 AM IRST | 1:00 PM JST |
| 8:00 AM IRST | 1:30 PM JST |
| 8:30 AM IRST | 2:00 PM JST |
| 9:00 AM IRST | 2:30 PM JST |
| 9:30 AM IRST | 3:00 PM JST |
| 10:00 AM IRST | 3:30 PM JST |
| 10:30 AM IRST | 4:00 PM JST |
| 11:00 AM IRST | 4:30 PM JST |
| 11:30 AM IRST | 5:00 PM JST |
| 12:00 PM IRST | 5:30 PM JST |
| 12:30 PM IRST | 6:00 PM JST |
| 1:00 PM IRST | 6:30 PM JST |
| 1:30 PM IRST | 7:00 PM JST |
| 2:00 PM IRST | 7:30 PM JST |
| 2:30 PM IRST | 8:00 PM JST |
| 3:00 PM IRST | 8:30 PM JST |
| 3:30 PM IRST | 9:00 PM JST |
| 4:00 PM IRST | 9:30 PM JST |
| 4:30 PM IRST | 10:00 PM JST |
| 5:00 PM IRST | 10:30 PM JST |
| 5:30 PM IRST | 11:00 PM JST |
| 6:00 PM IRST | 11:30 PM JST |
| 6:30 PM IRST | 12:00 AM JST |
| 7:00 PM IRST | 12:30 AM JST |
| 7:30 PM IRST | 1:00 AM JST |
| 8:00 PM IRST | 1:30 AM JST |
| 8:30 PM IRST | 2:00 AM JST |
| 9:00 PM IRST | 2:30 AM JST |
| 9:30 PM IRST | 3:00 AM JST |
| 10:00 PM IRST | 3:30 AM JST |
| 10:30 PM IRST | 4:00 AM JST |
| 11:00 PM IRST | 4:30 AM JST |
| 11:30 PM IRST | 5:00 AM JST |
Japan Standard Time (JST) is 5.5 hours ahead of Iran Standard Time (IRST). When converting from IRST to JST, you need to add 5.5 hours to get the correct time.
When it's 12:00 PM (noon) in Iran Standard Time, it's 5.5:00 PM in Japan Standard Time. This is because JST is 5.5 hours ahead of IRST.
When it's 12:00 AM (midnight) in Iran Standard Time, it's 5.5:00 AM in Japan Standard Time.
Iran Standard Time (IRST) has a UTC offset of +3.5:00, while Japan Standard Time (JST) has a UTC offset of +9:00.
Simply add 5.5 hours to the IRST time. For example, 3:00 PM IRST becomes 8.5:00 PM JST.
The best time depends on both parties' schedules. A common overlap during business hours (9 AM - 5 PM) would be when it's early morning in IRST. Use our converter to find the perfect time.
Daylight Saving Time (DST) observance varies by region. Some areas within Iran Standard Time and Japan Standard Time zones may observe DST, which can temporarily change the time difference by 1 hour.
Iran Standard Time (IRST) is used by various countries and regions around the world. The UTC offset of +3.5:00 is shared by multiple time zones.
Japan Standard Time (JST) is used by various countries and regions around the world. With a UTC offset of +9:00, this time zone covers multiple geographic areas.
Yes! Remember that JST is always 5.5 hours ahead of IRST. If it's noon in IRST, it's 5.5:00 PM in JST. Bookmark this page for quick reference!
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