Question 1

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

Accepted Answer

Japan Standard Time (JST) is UTC+9 and Singapore Time (SGT) is UTC+8. The exact time difference between JST and SGT can change when one or both zones transition into or out of daylight saving time.

Question 2

Does JST or SGT observe daylight saving time?

Accepted Answer

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

Question 3

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

Accepted Answer

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

Question 4

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

Accepted Answer

When it is 12:00 PM (noon) in Tokyo (JST), the equivalent time in Singapore (SGT) 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 SGT?

Accepted Answer

JST maps to the IANA identifier "Asia/Tokyo". SGT maps to "Asia/Singapore". 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 Singapore?

Accepted Answer

Whether Tokyo (JST) is ahead of or behind Singapore (SGT) 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 SGT?

Accepted Answer

JST is UTC+9 and SGT is UTC+8. 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 SGT?

Accepted Answer

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

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

JST to SGT Time Converter

Convert a specific time

Daylight Saving status right now

When can JST and SGT meet?

Hour-by-hour JST to SGT conversion table

About these time zones

Sun today in Tokyo and Singapore

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