TimeToZone

JST to GST Converter

GST is 5 hours behind JST. 9:00 AM JST = 4:00 AM GST.

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JSTfrom
Japan Standard Time
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GST
Gulf Standard Time
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GST is 5 hours behind JST. To convert JST to GST, subtract 5 hours from the JST time: 9:00 AM JST = 4:00 AM GST.

JST (Japan Time) is used in Japan. GST (Gulf Time) is used in United Arab Emirates and Oman.

JST to GST time conversion table

JST to GST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.

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

Conversion table from JST to GST for 7 Nov 2026. A tick marks hours that fall between 9 AM and 5 PM in both places. +1 means the next day in GST, −1 the previous day.

  • ✓ marks 9 AM–5 PM in both places
  • Greyed times are night in the destination (10 PM–6 AM)

How to convert JST to GST

Subtract 5 hours from the JST time to get GST.

Example: 9:00 AM JST = 4:00 AM GST.

Across midnight: 1:00 AM JST = 8:00 PM GST (previous day). The date changes, so always check the day as well as the hour.

Time difference between JST and GST

The time difference between JST and GST is 5 hours all year – GST is behind JST.

JST and GST during daylight saving time

  • JST does not observe daylight saving time; it stays on UTC+9 all year.
  • GST does not observe daylight saving time; it stays on UTC+4 all year.

Best time for a meeting between JST and GST

JST and GST share 3 hours of the 9 AM–5 PM working day. Any time between 2:00 PM and 5:00 PM JST lands between 9:00 AM and 12:00 PM GST, inside working hours for both.

Plan a meeting across more time zones.

JST to GST FAQ

What is the time difference between JST and GST?

GST is 5 hours behind JST all year. 9:00 AM JST = 4:00 AM GST.

What is 9 AM JST in GST?

9:00 AM JST is 4:00 AM GST.

What is 12 PM (noon) JST in GST?

12:00 PM JST is 7:00 AM GST.

Is GST ahead of or behind JST?

GST is 5 hours behind JST, so it is earlier in GST than in JST.

Does JST change for daylight saving time?

No. JST stays on the same offset all year, so conversions never shift for daylight saving time.

Does GST change for daylight saving time?

No. GST stays on the same offset all year, so conversions never shift for daylight saving time.

What is the best time for a meeting between JST and GST?

JST and GST share 3 hours of the 9 AM–5 PM working day. Any time between 2:00 PM and 5:00 PM JST lands between 9:00 AM and 12:00 PM GST, inside working hours for both.

Related conversions

Convert GST to JST

GST to JST

Convert JST to other time zones

JST to ESTJST to Abbotsford TimeJST to Abidjan TimeJST to Abu Dhabi TimeJST to Adelaide TimeJST to AESTJST to Agra TimeJST to Ahmedabad TimeJST to Pune TimeJST to Quebec TimeJST to Rajkot TimeJST to Rangoon Time

Convert other time zones to GST

AEST to GSTAKST to GSTAST to GSTAustralia Time to GSTAWST to GSTBangladesh Time to GSTBrazil Time to GSTBRT to GSTCanada Time to GSTCET to GSTChina Time to GSTCST to GST

Learn more

JST time zoneGST time zone

Updated 7 November 2026. Time zone data: IANA tz database.