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GMT to GST: convert Greenwich Mean Time to Gulf Standard Time

GST is 4 hours ahead of GMT 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 nowGST is 4 hours ahead
GMTGreenwich Mean Time
12:00Thu, Jan 15
GSTGulf Standard Time
16:00Thu, 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

GMT: Greenwich Mean Time

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GST: Gulf Standard Time

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

GMT to GST hour by hour

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

Scheduling a call between GMT and GST

Standard business hours (9:00 AM to 5:00 PM) overlap from 9:00 AM to 1:00 PM in GMT, which is 1:00 PM to 5:00 PM in GST.

GST to GMT (reverse)Open the full converter

More GMT conversions

Offsets are computed from the IANA time zone database for January 15 and July 15 of the current year. GMT here means Greenwich Mean Time (fixed UTC+0 offset, all year); GST means Gulf Standard Time (United Arab Emirates and Oman).