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GST to JST: convert Gulf Standard Time to Japan Standard Time

JST is 5 hours ahead of GST all year.

Neither clock changes for daylight saving, so the gap never moves.

GST also abbreviates South Georgia Time (UTC-2). These pages use the Gulf meaning.

One instant, two local clocks

Drag one day across both zones

Shared instant12:00 UTC
Difference nowJST is 5 hours ahead
GSTGulf Standard Time
16:00Thu, Jan 15
JSTJapan Standard Time
21:00Thu, Jan 15
Approximate daylight 09:00 to 17:00 Selected local time

Both lanes show the same instant. Local dates, daylight, and offsets come from each IANA zone on the selected date, so daylight saving changes are included.

Right now

GST: Gulf Standard Time

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JST: Japan Standard Time

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Local times come from your browser's IANA time zone data.

GST to JST hour by hour

GSTJST
12:00 AM5:00 AM
1:00 AM6:00 AM
2:00 AM7:00 AM
3:00 AM8:00 AM
4:00 AM9:00 AM
5:00 AM10:00 AM
6:00 AM11:00 AM
7:00 AM12:00 PM
8:00 AM1:00 PM
9:00 AM2:00 PM
10:00 AM3:00 PM
11:00 AM4:00 PM
12:00 PM5:00 PM
1:00 PM6:00 PM
2:00 PM7:00 PM
3:00 PM8:00 PM
4:00 PM9:00 PM
5:00 PM10:00 PM
6:00 PM11:00 PM
7:00 PM12:00 AM (next day)
8:00 PM1:00 AM (next day)
9:00 PM2:00 AM (next day)
10:00 PM3:00 AM (next day)
11:00 PM4:00 AM (next day)

Scheduling a call between GST and JST

Standard business hours (9:00 AM to 5:00 PM) overlap from 9:00 AM to 12:00 PM in GST, which is 2:00 PM to 5:00 PM in JST.

JST to GST (reverse)Open the full converter

More GST conversions

Offsets are computed from the IANA time zone database for January 15 and July 15 of the current year. GST here means Gulf Standard Time (United Arab Emirates and Oman); JST means Japan Standard Time (Japan).