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DateAlmanac

What is GST in JST?

Japan Standard Time is 5 hours ahead

Gulf Standard Time is on UTC+4:00 and Japan Standard Time is on UTC+9:00 right now. That gap holds all year, because both zones change their clocks together.

Time in Dubai
4:53:11 PM
Time in Tokyo
9:53:11 PM
Difference
+5 h
Next clock change
Neither zone

Convert a time

JST — Japan Standard Time

9:00 pm

JST, Fri

Daylight saving

Gulf Standard Time

No clock changes

Gulf Standard Time stays on GST all year, so its offset from UTC never moves.

Japan Standard Time

No clock changes

Japan Standard Time stays on JST all year, so its offset from UTC never moves.

GST to JST conversion table

Every hour of Friday, September 25, 2026, converted from Gulf Standard Time to Japan Standard Time. 5 of the 24 hours fall on a different calendar day in Tokyo, which is marked.

12:00 am GST
5:00 am JST
1:00 am GST
6:00 am JST
2:00 am GST
7:00 am JST
3:00 am GST
8:00 am JST
4:00 am GST
9:00 am JST
5:00 am GST
10:00 am JST
6:00 am GST
11:00 am JST
7:00 am GST
12:00 pm JST
8:00 am GST
1:00 pm JST
9:00 am GST
2:00 pm JST
10:00 am GST
3:00 pm JST
11:00 am GST
4:00 pm JST
12:00 pm GST
5:00 pm JST
1:00 pm GST
6:00 pm JST
2:00 pm GST
7:00 pm JST
3:00 pm GST
8:00 pm JST
4:00 pm GST
9:00 pm JST
5:00 pm GST
10:00 pm JST
6:00 pm GST
11:00 pm JST
7:00 pm GST
12:00 am JST+1 day
8:00 pm GST
1:00 am JST+1 day
9:00 pm GST
2:00 am JST+1 day
10:00 pm GST
3:00 am JST+1 day
11:00 pm GST
4:00 am JST+1 day

Scheduling between the two

Working hours overlap from 9:00 am to 1:00 pm GST, which is 2:00 pm to 6:00 pm JST. Anything inside that window falls in the normal working day at both ends.

Gulf Standard Time (GST) is used in the UAE and Oman

Other conversions