Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between sgt and jst?
Singapore Time (sgt) is UTC+8 and Japan Standard Time (jst) is UTC+9. The difference between them is 1 hours.
Where is sgt used?
Singapore Time (sgt) is used in Singapore and surrounding regions. The IANA timezone identifier is Asia/Singapore.
Where is jst used?
Japan Standard Time (jst) is used in Japan and surrounding regions. The IANA timezone identifier is Asia/Tokyo.
How do I convert sgt to jst?
Use the interactive converter above. Drag the time slider to any sgt time and the jst equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
How far apart are SGT (Singapore) and JST (Tokyo)?
SGT (Singapore) is 1 hour behind JST (Tokyo). When it's noon in SGT (Singapore), it's 13:00 in JST (Tokyo).
SGT (Singapore) observes Asia/Singapore and JST (Tokyo) observes Asia/Tokyo — a 1 hour gap between them.
Daily overlap window
Both SGT (Singapore) and JST (Tokyo) are simultaneously in business hours for 7 hours per day (assuming standard 9:00–17:00 working hours).
00:0006:0012:0018:0024:00
SGT (Singapore)
JST (Tokyo)
Overlap (7h)
Meeting time recommendations
SGT (Singapore) and JST (Tokyo) share 7 hours of business hours overlap daily. Showing the 3 most balanced slots — see the time table below for the full window.
09:00 Singapore / 10:00 Tokyo✓ Both working
10:00 Singapore / 11:00 Tokyo✓ Both working
11:00 Singapore / 12:00 Tokyo✓ Both working
Assumes a standard 9 AM–5 PM workday in each location's local timezone.
Public holidays this year
⚡ Upcoming holidays in both locations, confirm with your contact before booking.
SGT (Singapore)3 holidays
Aug 10National Day
Nov 9Deepavali
Dec 25Christmas Day
JST (Tokyo)7 holidays
Jul 20Marine Day
Aug 11Mountain Day
Sep 21Respect for the Aged Day
Sep 23Autumnal Equinox Day
Oct 12Sports Day
SGT (Singapore) and JST (Tokyo) — practical scheduling
Teams in SGT (Singapore) (Singapore) and JST (Tokyo) (Japan) face a 1-hour time difference day to day. A 7-hour shared business hours window makes real-time meetings feasible for both sides within their normal working day.
💡 Practical scheduling guidelines
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Schedule at 09:00–10:00 (SGT (Singapore)) for a 10:00–11:00 slot in JST (Tokyo) — the sweet spot where both teams are working.
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Schedule at 10:00–11:00 (SGT (Singapore)) for a 11:00–12:00 slot in JST (Tokyo) — the sweet spot where both teams are working.
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Schedule at 11:00–12:00 (SGT (Singapore)) for a 12:00–13:00 slot in JST (Tokyo) — the sweet spot where both teams are working.
Recurring meetings are particularly vulnerable to DST shifts. The ClockinSync Chrome Extension alerts you before the offset changes.
Drag the slider at the top to convert any SGT (Singapore) time instantly. You can also type natural language like "3pm", "15:00", or a location name to get an immediate answer.
