What's the current time difference between JST and SGT?

Right now, SGT (SGT · Singapore Time) is −1h relative to JST (JST · Japan Standard Time). The number is live and reflects the current daylight-saving status of both zones.

Does this converter account for daylight saving time?

Yes. The math is done against IANA's tz database via Intl.DateTimeFormat, so DST shifts in either zone show up immediately at the transition. Around DST boundaries the conversion can move by an hour from one week to the next — this page always reflects the current rule.

Why does the TO column sometimes show "+1d" or "−1d"?

When the JST hour lands on a different calendar day in SGT, we flag it so you don't accidentally schedule a meeting on the wrong date. JST 11 PM is often the next day in eastern-hemisphere zones, for example.

How do I schedule a meeting that works for both zones?

Look at the row highlighted lume green — that's the longest contiguous block where both JST and SGT are in standard working hours (9 AM–5 PM local). Open the planner from the link above to lock a specific time and share a DST-stable link with the other party.

JST to SGT

JST · Japan Standard Time ↔ SGT · Singapore Time. Right now, SGT is −1h relative to JST. DST is honored live.

From

JST

—

SGT

—

00:00JST hour of day23:30

Live offset

−1h

JST (May 24) ↔ SGT (May 23)

If JST or SGT just shifted for daylight saving, that's already reflected.

Best meeting overlap

10:00 AM – 4:00 PM

JST time. Equivalent SGT: 9:00 AM – 3:00 PM

Working hours = 9 AM – 5 PM in each zone.

Hour-by-hour

JST → SGT, every hour

JST · May 24SGT · May 23

12:00 AM11:00 PM
1:00 AM+1d12:00 AM
2:00 AM+1d1:00 AM
3:00 AM+1d2:00 AM
4:00 AM+1d3:00 AM
5:00 AM+1d4:00 AM
6:00 AM+1d5:00 AM
7:00 AM+1d6:00 AM
8:00 AM+1d7:00 AM
9:00 AM+1d8:00 AM
10:00 AM+1d9:00 AM
11:00 AM+1d10:00 AM
12:00 PM+1d11:00 AM
1:00 PM+1d12:00 PM
2:00 PM+1d1:00 PM
3:00 PM+1d2:00 PM
4:00 PM+1d3:00 PM
5:00 PM+1d4:00 PM
6:00 PM+1d5:00 PM
7:00 PM+1d6:00 PM
8:00 PM+1d7:00 PM
9:00 PM+1d8:00 PM
10:00 PM+1d9:00 PM
11:00 PM+1d10:00 PM

Both zones in working hours±1d = the TO side lands on a different calendar day

FAQ

JST ↔ SGT, questions answered

What's the current time difference between JST and SGT?: Right now, SGT (SGT · Singapore Time) is −1h relative to JST (JST · Japan Standard Time). The number is live and reflects the current daylight-saving status of both zones.
Does this converter account for daylight saving time?: Yes. The math is done against IANA's tz database via Intl.DateTimeFormat, so DST shifts in either zone show up immediately at the transition. Around DST boundaries the conversion can move by an hour from one week to the next — this page always reflects the current rule.
Why does the TO column sometimes show "+1d" or "−1d"?: When the JST hour lands on a different calendar day in SGT, we flag it so you don't accidentally schedule a meeting on the wrong date. JST 11 PM is often the next day in eastern-hemisphere zones, for example.
How do I schedule a meeting that works for both zones?: Look at the row highlighted lume green — that's the longest contiguous block where both JST and SGT are in standard working hours (9 AM–5 PM local). Open the planner from the link above to lock a specific time and share a DST-stable link with the other party.

Reverse — SGT to JST Open in planner