GST to JST Time Converter
Compare GST and JST instantly. The clocks below stay in sync with the IANA time-zone database, so daylight-saving transitions are handled automatically for both Dubai and Tokyo.
24-Hour Comparison Timeline
Green = working hours · Yellow = early/late · Red = night
24-hour reference table
| GST (Dubai) | JST (Tokyo) |
|---|---|
| 12:00 AM | 05:00 AM |
| 01:00 AM | 06:00 AM |
| 02:00 AM | 07:00 AM |
| 03:00 AM | 08:00 AM |
| 04:00 AM | 09:00 AM |
| 05:00 AM | 10:00 AM |
| 06:00 AM | 11:00 AM |
| 07:00 AM | 12:00 PM |
| 08:00 AM | 01:00 PM |
| 09:00 AM | 02:00 PM |
| 10:00 AM | 03:00 PM |
| 11:00 AM | 04:00 PM |
| 12:00 PM | 05:00 PM |
| 01:00 PM | 06:00 PM |
| 02:00 PM | 07:00 PM |
| 03:00 PM | 08:00 PM |
| 04:00 PM | 09:00 PM |
| 05:00 PM | 10:00 PM |
| 06:00 PM | 11:00 PM |
| 07:00 PM | 12:00 AM(Sat, Oct 3) |
| 08:00 PM | 01:00 AM(Sat, Oct 3) |
| 09:00 PM | 02:00 AM(Sat, Oct 3) |
| 10:00 PM | 03:00 AM(Sat, Oct 3) |
| 11:00 PM | 04:00 AM(Sat, Oct 3) |
Daylight saving time
Neither Dubai nor Tokyo observes daylight saving time — the offset between GST and JST is fixed year-round.
Working-hours overlap
9 AM–12 PM GST (2 PM–5 PM JST) — the shared 9-to-5 window for meetings.
Frequently asked questions
What is the time difference between GST and JST?+
JST (UTC+09:00) is currently 5 hours ahead of GST (UTC+04:00). This page recalculates the offset live from the IANA time-zone database, including any daylight-saving transitions.
Does GST or JST observe daylight saving time?+
Neither Dubai nor Tokyo observes daylight saving time, so the offset stays fixed all year. Times on this page always reflect the current local rules.
What are the best meeting hours between Dubai and Tokyo?+
Standard 9–5 working hours in Dubai and Tokyo overlap from 9 AM to 12 PM GST (2 PM–5 PM JST). Schedule calls inside this window to keep both sides in normal business hours.
How do I quickly convert GST to JST?+
Use the live clocks and 24-hour reference table above. Pick any hour on the GST row to see the matching JST time. The Event Planner also lets you pick a specific date and share it with attendees.