Question 1

What is the time difference between JST and GST right now?

Accepted Answer

Japan Standard Time (JST) is UTC+9 and Gulf Standard Time (GST) is UTC+4. The exact time difference between JST and GST can change when one or both zones transition into or out of daylight saving time.

Question 2

Does JST or GST observe daylight saving time?

Accepted Answer

Daylight saving time observance varies by region. Japan Standard Time and Gulf Standard Time may or may not observe DST. The converter on this page automatically adjusts for any DST changes in either JST or GST.

Question 3

When is the best time to schedule a meeting between JST and GST?

Accepted Answer

The best meeting window between JST and GST is shown on this page in the working-hours overlap section. It is computed from real 9am-5pm working windows in Tokyo and Dubai for today.

Question 4

What time is it in Dubai when it is 12:00 noon in Tokyo?

Accepted Answer

When it is 12:00 PM (noon) in Tokyo (JST), the equivalent time in Dubai (GST) is shown in the hour-by-hour conversion table on this page. The converter accounts for daylight saving time wherever it applies.

Question 5

Which IANA time zone identifiers are used for JST and GST?

Accepted Answer

JST maps to the IANA identifier "Asia/Tokyo". GST maps to "Asia/Dubai". These canonical identifiers are what most software libraries use to convert times accurately, including daylight saving handling.

Question 6

Is Tokyo ahead of or behind Dubai?

Accepted Answer

Whether Tokyo (JST) is ahead of or behind Dubai (GST) depends on the current UTC offsets shown on this page. The live converter and side-by-side clocks above will always reflect the current direction.

Question 7

What are the current UTC offsets for JST and GST?

Accepted Answer

JST is UTC+9 and GST is UTC+4. Both offsets shift by one hour when the corresponding region enters or exits daylight saving time, so the live values on this page are the source of truth.

Question 8

Can I schedule meetings during business hours for both JST and GST?

Accepted Answer

The "When can JST and GST meet?" section on this page tells you whether the standard 9am-5pm working hours in Tokyo and Dubai overlap, and if so, the exact window you can schedule a meeting without inconveniencing either side.

JST time (Tokyo)	GST time (Dubai)	Status
00:00 Mon	19:00 Sun	Off-hours both sides
01:00 Mon	20:00 Sun	Off-hours both sides
02:00 Mon	21:00 Sun	Off-hours both sides
03:00 Mon	22:00 Sun	Off-hours both sides
04:00 Mon	23:00 Sun	Off-hours both sides
05:00 Mon	00:00 Mon	Off-hours both sides
06:00 Mon	01:00 Mon	Off-hours both sides
07:00 Mon	02:00 Mon	Off-hours both sides
08:00 Mon	03:00 Mon	Off-hours both sides
09:00 Mon	04:00 Mon	JST working
10:00 Mon	05:00 Mon	JST working
11:00 Mon	06:00 Mon	JST working
12:00 Mon	07:00 Mon	JST working
13:00 Mon	08:00 Mon	JST working
14:00 Mon	09:00 Mon	Both at work
15:00 Mon	10:00 Mon	Both at work
16:00 Mon	11:00 Mon	Both at work
17:00 Mon	12:00 Mon	GST working
18:00 Mon	13:00 Mon	GST working
19:00 Mon	14:00 Mon	GST working
20:00 Mon	15:00 Mon	GST working
21:00 Mon	16:00 Mon	GST working
22:00 Mon	17:00 Mon	Off-hours both sides
23:00 Mon	18:00 Mon	Off-hours both sides

JST to GST Time Converter

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Daylight Saving status right now

When can JST and GST meet?

Hour-by-hour JST to GST conversion table

About these time zones

Sun today in Tokyo and Dubai

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