What is 8 AM GST in JST?
8 AM GST = 1:00 PM JST (13:00). On today's live calendar that lands on Wed, Apr 22 in JST, which means the answer is a same day conversion rather than a static offset lookup.
Timezone converter
GST to JST currently uses Gulf Time in Asia/Dubai and Japan Time in Asia/Tokyo as the live reference pair. Right now the gap is +5h, and the sections below break that into meeting-time shortcuts, workday overlap, DST changes, and city coverage on both sides.
Last updated Apr 22, 2026. Offset math, DST behavior, and city coverage on both sides are refreshed from the live timezone dataset during the page revalidation window.
GST is ambiguous in this dataset, so the live converter uses Asia/Dubai as the busiest reference zone while the city list below shows the wider label family.
From
Gulf Time
Asia/Dubai · GMT+4 +04:00
Major markets in this grouping include Dubai, Abu Dhabi, Sharjah, Al Ain City.
To
Japan Time
Asia/Tokyo · GMT+9 +09:00
Major markets in this grouping include Tokyo, Yokohama, Osaka, Nagoya.
Current gap
+5h
GST +04:00 vs JST +09:00
9-to-5 overlap
3h
GST 9:00 AM previous day to 12:00 PM previous day
Representative countries
United Arab Emirates, Oman, and South Georgia and the South Sandwich Islands / Japan
Based on the busiest city and zone usage found in the current dataset.
GST and JST currently connect Dubai and Tokyo with a live gap of +5h. Representative coverage on the GST side is anchored by Dubai, Abu Dhabi, Sharjah, and Al Ain City, while the JST side is anchored by Tokyo, Yokohama, Osaka, and Nagoya.
Using a simple 9:00 AM to 5:00 PM workday on both sides, the pair shares about 3 hours of business overlap - roughly GST 9:00 AM previous day to 12:00 PM previous day, which is JST 2:00 PM previous day to 5:00 PM previous day. There is still a usable shared block in the morning or afternoon, so teams can usually meet without pushing too far outside standard hours.
The live gap is +5h right now, based on Asia/Dubai at +04:00 and Asia/Tokyo at +09:00. Neither reference zone shows an offset change in the next year, so the gap should stay stable.
On the GST side, the current dataset is anchored by cities such as Dubai, United Arab Emirates; Abu Dhabi, United Arab Emirates; Sharjah, United Arab Emirates; Al Ain City, United Arab Emirates; Muscat, Oman; Ajman, United Arab Emirates. That makes this page useful for real-world coordination patterns rather than only abstract offset math.
On the JST side, the live reference set includes Tokyo, Japan; Yokohama, Japan; Osaka, Japan; Nagoya, Japan; Sapporo, Japan; Fukuoka, Japan. In practice, that means the conversion is tied to recognizable business, travel, and support hubs rather than a single anonymous timezone label.
Country usage on the two sides currently includes United Arab Emirates, Oman, and South Georgia and the South Sandwich Islands for GST and Japan for JST. That country coverage helps explain why some pairs feel like outsourcing, logistics, gaming, finance, or travel-heavy conversions while others are more niche.
Adjust the time — digits roll like an odometer. Swap button flips the zones.
Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.
| GST | JST | Day relation |
|---|---|---|
| 9:00 AM | 2:00 PMWed, Apr 22 | same day |
| 12:00 PM | 5:00 PMWed, Apr 22 | same day |
| 3:00 PM | 8:00 PMWed, Apr 22 | same day |
| 6:00 PM | 11:00 PMWed, Apr 22 | same day |
| 9:00 PM | 2:00 AMThu, Apr 23 | next day |
Quick conversions for 9 AM, noon, 3 PM, 6 PM, and 9 PM based on today's local calendar.
| JST | GST | Day relation |
|---|---|---|
| 9:00 AM | 4:00 AMWed, Apr 22 | same day |
| 12:00 PM | 7:00 AMWed, Apr 22 | same day |
| 3:00 PM | 10:00 AMWed, Apr 22 | same day |
| 6:00 PM | 1:00 PMWed, Apr 22 | same day |
| 9:00 PM | 4:00 PMWed, Apr 22 | same day |
GST to JST meeting times is easiest to read as a working-day range rather than a single spot conversion. In the current snapshot, 9:00 AM lands at 2:00 PM, while 9:00 PM lands at 2:00 AM, which makes the practical handoff window much easier to scan.
JST to GST meeting times is easiest to read as a working-day range rather than a single spot conversion. In the current snapshot, 9:00 AM lands at 4:00 AM, while 9:00 PM lands at 4:00 PM, which makes the practical handoff window much easier to scan.
These direct answers are here for the exact-intent searches people actually use, like “10 AM GST to JST” or “4 PM GST in JST”.
8 AM GST = 1:00 PM JST (13:00). On today's live calendar that lands on Wed, Apr 22 in JST, which means the answer is a same day conversion rather than a static offset lookup.
9 AM GST = 2:00 PM JST (14:00). On today's live calendar that lands on Wed, Apr 22 in JST, which means the answer is a same day conversion rather than a static offset lookup.
10 AM GST = 3:00 PM JST (15:00). On today's live calendar that lands on Wed, Apr 22 in JST, which means the answer is a same day conversion rather than a static offset lookup.
11 AM GST = 4:00 PM JST (16:00). On today's live calendar that lands on Wed, Apr 22 in JST, which means the answer is a same day conversion rather than a static offset lookup.
12 PM GST = 5:00 PM JST (17:00). On today's live calendar that lands on Wed, Apr 22 in JST, which means the answer is a same day conversion rather than a static offset lookup.
1 PM GST = 6:00 PM JST (18:00). On today's live calendar that lands on Wed, Apr 22 in JST, which means the answer is a same day conversion rather than a static offset lookup.
2 PM GST = 7:00 PM JST (19:00). On today's live calendar that lands on Wed, Apr 22 in JST, which means the answer is a same day conversion rather than a static offset lookup.
3 PM GST = 8:00 PM JST (20:00). On today's live calendar that lands on Wed, Apr 22 in JST, which means the answer is a same day conversion rather than a static offset lookup.
4 PM GST = 9:00 PM JST (21:00). On today's live calendar that lands on Wed, Apr 22 in JST, which means the answer is a same day conversion rather than a static offset lookup.
5 PM GST = 10:00 PM JST (22:00). On today's live calendar that lands on Wed, Apr 22 in JST, which means the answer is a same day conversion rather than a static offset lookup.
6 PM GST = 11:00 PM JST (23:00). On today's live calendar that lands on Wed, Apr 22 in JST, which means the answer is a same day conversion rather than a static offset lookup.
9 PM GST = 2:00 AM JST (02:00). On today's live calendar that lands on Thu, Apr 23 in JST, which means the answer is a next day conversion rather than a static offset lookup.
The live gap is +5h right now, based on Asia/Dubai at +04:00 and Asia/Tokyo at +09:00. Neither reference zone shows an offset change in the next year, so the gap should stay stable.
The most usable workday block right now is about 3 hours: GST 9:00 AM previous day to 12:00 PM previous day, which lines up with JST 2:00 PM previous day to 5:00 PM previous day.
Asia/Dubai
GMT+4 · +04:00
Asia/Tokyo
GMT+9 · +09:00
These are the busiest live references selected from the abbreviation families on this page.
| GST | JST |
|---|---|
| 04:00 | 09:00 |
| 05:00 | 10:00 |
| 06:00 | 11:00 |
| 07:00 | 12:00 |
| 08:00 | 13:00 |
| 09:00 | 14:00 |
| 10:00 | 15:00 |
| 11:00 | 16:00 |
| 12:00 | 17:00 |
| 13:00 | 18:00 |
| 14:00 | 19:00 |
| 15:00 | 20:00 |
| 16:00 | 21:00 |
| 17:00 | 22:00 |
| 18:00 | 23:00 |
| 19:00 | 00:00 |
| 20:00 | 01:00 |
| 21:00 | 02:00 |
| 22:00 | 03:00 |
| 23:00 | 04:00 |
| 00:00 | 05:00 |
| 01:00 | 06:00 |
| 02:00 | 07:00 |
| 03:00 | 08:00 |
Countries represented here include United Arab Emirates, Oman, and South Georgia and the South Sandwich Islands.
Countries represented here include Japan.
Once a conversion pair matters, people usually need a city page, compare page, or a broader browse surface next.
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