BuddyClock

JST to IRST

Convert Japan Standard Time (JST) to Iran Standard Time (IRST) instantly. Free, fast and accurate time zone converter with real-time updates.

About this converter

Japan Standard Time (JST)
UTC offset: +9 hours
Iran Standard Time (IRST)
UTC offset: +3:30 hours

JST to IRST Time Converter Chart

JST TimeIRST Time
12:00 AM JST6:30 PM IRST
12:30 AM JST7:00 PM IRST
1:00 AM JST7:30 PM IRST
1:30 AM JST8:00 PM IRST
2:00 AM JST8:30 PM IRST
2:30 AM JST9:00 PM IRST
3:00 AM JST9:30 PM IRST
3:30 AM JST10:00 PM IRST
4:00 AM JST10:30 PM IRST
4:30 AM JST11:00 PM IRST
5:00 AM JST11:30 PM IRST
5:30 AM JST12:00 AM IRST
6:00 AM JST12:30 AM IRST
6:30 AM JST1:00 AM IRST
7:00 AM JST1:30 AM IRST
7:30 AM JST2:00 AM IRST
8:00 AM JST2:30 AM IRST
8:30 AM JST3:00 AM IRST
9:00 AM JST3:30 AM IRST
9:30 AM JST4:00 AM IRST
10:00 AM JST4:30 AM IRST
10:30 AM JST5:00 AM IRST
11:00 AM JST5:30 AM IRST
11:30 AM JST6:00 AM IRST
12:00 PM JST6:30 AM IRST
12:30 PM JST7:00 AM IRST
1:00 PM JST7:30 AM IRST
1:30 PM JST8:00 AM IRST
2:00 PM JST8:30 AM IRST
2:30 PM JST9:00 AM IRST
3:00 PM JST9:30 AM IRST
3:30 PM JST10:00 AM IRST
4:00 PM JST10:30 AM IRST
4:30 PM JST11:00 AM IRST
5:00 PM JST11:30 AM IRST
5:30 PM JST12:00 PM IRST
6:00 PM JST12:30 PM IRST
6:30 PM JST1:00 PM IRST
7:00 PM JST1:30 PM IRST
7:30 PM JST2:00 PM IRST
8:00 PM JST2:30 PM IRST
8:30 PM JST3:00 PM IRST
9:00 PM JST3:30 PM IRST
9:30 PM JST4:00 PM IRST
10:00 PM JST4:30 PM IRST
10:30 PM JST5:00 PM IRST
11:00 PM JST5:30 PM IRST
11:30 PM JST6:00 PM IRST

Frequently Asked Questions: JST to IRST

What is the time difference between JST and IRST?

Iran Standard Time (IRST) is 5.5 hours behind Japan Standard Time (JST). When converting from JST to IRST, you need to subtract 5.5 hours to get the correct time.

When it's 12:00 PM (noon) in JST, what time is it in IRST?

When it's 12:00 PM (noon) in Japan Standard Time, it's 6.5:00 AM in Iran Standard Time. This is because IRST is 5.5 hours behind JST.

When it's midnight in JST, what time is it in IRST?

When it's 12:00 AM (midnight) in Japan Standard Time, it's 6.5:00 PM in Iran Standard Time.

What are the UTC offsets for JST and IRST?

Japan Standard Time (JST) has a UTC offset of +9:00, while Iran Standard Time (IRST) has a UTC offset of +3.5:00.

How do I quickly convert JST to IRST in my head?

Simply subtract 5.5 hours to the JST time. For example, 3:00 PM JST becomes 9.5:00 AM IRST.

What is the best time to schedule a call between JST and IRST?

The best time depends on both parties' schedules. A common overlap during business hours (9 AM - 5 PM) would be when it's late afternoon in JST. Use our converter to find the perfect time.

Do JST and IRST observe Daylight Saving Time?

Daylight Saving Time (DST) observance varies by region. Some areas within Japan Standard Time and Iran Standard Time zones may observe DST, which can temporarily change the time difference by 1 hour.

What countries or regions use JST?

Japan Standard Time (JST) is used by various countries and regions around the world. The UTC offset of +9:00 is shared by multiple time zones.

What countries or regions use IRST?

Iran Standard Time (IRST) is used by various countries and regions around the world. With a UTC offset of +3.5:00, this time zone covers multiple geographic areas.

Is there an easy way to remember the JST to IRST time difference?

Yes! Remember that IRST is always 5.5 hours behind JST. If it's noon in JST, it's 6.5:00 AM in IRST. Bookmark this page for quick reference!

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