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Convert JST to IRST Time - Free Time Zone Converter

Convert Japan Standard Time (JST) to Iran Standard Time (IRST, UTC+3.5) for regional business calls. Free converter with real-time conversion, meeting time planner, and business hours comparison for JST to IRST coordination. Includes 24-hour conversion table and live time displays. Perfect for international scheduling and global team collaboration. Works on all devices with accurate, reliable results.

🌍
JST
Japan Standard Time
Current Time
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🕐
IRST
Iran Standard Time
Current Time
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Converted Time
Select a time to convert
Time Difference
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Your Local Time
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UTC Time
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JST to IRST Time Zone Difference

Iran Standard Time is 5 hours and 30 minutes behind Japan Standard Time

Always up-to-date and accurate

24-Hour JST to IRST Conversion Chart

Complete hourly conversion for Japan Standard Time to Iran Standard Time

12:00 AM
JST
6:30 PM
IRST
(previous day)
00:00 18:30
1:00 AM
JST
7:30 PM
IRST
(previous day)
01:00 19:30
2:00 AM
JST
8:30 PM
IRST
(previous day)
02:00 20:30
3:00 AM
JST
9:30 PM
IRST
(previous day)
03:00 21:30
4:00 AM
JST
10:30 PM
IRST
(previous day)
04:00 22:30
5:00 AM
JST
11:30 PM
IRST
(previous day)
05:00 23:30
6:00 AM
JST
12:30 AM
IRST
06:00 00:30
7:00 AM
JST
1:30 AM
IRST
07:00 01:30
8:00 AM
JST
2:30 AM
IRST
08:00 02:30
9:00 AM
JST
3:30 AM
IRST
09:00 03:30
10:00 AM
JST
4:30 AM
IRST
10:00 04:30
11:00 AM
JST
5:30 AM
IRST
11:00 05:30
12:00 PM
JST
6:30 AM
IRST
12:00 06:30
1:00 PM
JST
7:30 AM
IRST
13:00 07:30
2:00 PM
JST
8:30 AM
IRST
14:00 08:30
3:00 PM
JST
9:30 AM
IRST
15:00 09:30
4:00 PM
JST
10:30 AM
IRST
16:00 10:30
5:00 PM
JST
11:30 AM
IRST
17:00 11:30
6:00 PM
JST
12:30 PM
IRST
18:00 12:30
7:00 PM
JST
1:30 PM
IRST
19:00 13:30
8:00 PM
JST
2:30 PM
IRST
20:00 14:30
9:00 PM
JST
3:30 PM
IRST
21:00 15:30
10:00 PM
JST
4:30 PM
IRST
22:00 16:30
11:00 PM
JST
5:30 PM
IRST
23:00 17:30

Best Meeting Times between Japan Standard Time and Iran Standard Time

Optimal hours for calls between JST and IRST

Business hours overlap available
3:00 PM JST → 9:30 AM IRST
Business Hours
4:00 PM JST → 10:30 AM IRST
Business Hours
5:00 PM JST → 11:30 AM IRST
Business Hours

Based on standard business hours (9:00 AM - 6:00 PM) in each time zone

Time Zone Details

Technical information for both time zones

JST

Japan Standard Time

Source timezone

UTC Offset 9.0 hours
Abbreviation JST
Type Standard Time
Status Active
IRST

Iran Standard Time

Target timezone

UTC Offset 3.5 hours
Abbreviation IRST
Type Standard Time
Status Active

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