Tokyo to GST
-5hTokyo
JSTSOURCEGST
GSTGreen rows indicate typical business hours (9 AM - 5 PM)
JST and GST on the World Map
The map below highlights the JST (Japan Standard Time) and GST (Gulf Standard Time) timezone regions across the globe.
JST – Japan Standard Time
UTC+09:00Japan Standard Time (JST) is the time zone for Japan, 9 hours ahead of UTC.
- •Japan does not observe daylight saving time.
- •Tokyo is the most populous metropolitan area in the world.
- •The Tokyo Stock Exchange operates from 9:00 AM to 3:00 PM JST.
- •JST is 14 hours ahead of EST and 9 hours ahead of GMT.
GST – Gulf Standard Time
UTC+04:00Gulf Standard Time (GST) is used in the UAE, Oman, and other Gulf states, 4 hours ahead of UTC.
- •Dubai uses GST year-round with no daylight saving time.
- •GST is 9 hours ahead of EST and 4 hours ahead of GMT.
- •The Dubai Financial Market (DFM) operates on GST.
About Tokyo
WikipediaTokyo operates on Japan Standard Time (JST), which is 14 hours ahead of New York. As Asia's largest financial hub, Tokyo trading hours are crucial for global markets.
The Tokyo subway system moves approximately 8.7 million passengers daily.
Time Conversion Guide: Tokyo to GST
Tokyo runs on Japan Standard Time (JST) at UTC+09:00. GST runs on Gulf Standard Time (GST) at UTC+04:00. That puts Tokyo 5 hours behind GST — a difference of -5h at the current offsets.
In practice, when it is 9:00 AM in Tokyo it is 4:00 AM in GST. Midnight in Tokyo is 7:00 PM in GST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Tokyo to GST time conversion table
| Tokyo (JST) | GST (GST) | Day |
|---|---|---|
| 12:00 AM | 7:00 PM | previous day |
| 6:00 AM | 1:00 AM | same day |
| 7:00 AM | 2:00 AM | same day |
| 8:00 AM | 3:00 AM | same day |
| 9:00 AM | 4:00 AM | same day |
| 12:00 PM | 7:00 AM | same day |
| 3:00 PM | 10:00 AM | same day |
| 5:00 PM | 12:00 PM | same day |
| 6:00 PM | 1:00 PM | same day |
| 9:00 PM | 4:00 PM | same day |
Why people convert Tokyo to GST time
- Scheduling a call from Tokyo to GST: a 10:00 AM start in Tokyo lands at 5:00 AM in GST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Tokyo and GST are inside the 9-to-5 working day between 2:00 PM and 5:00 PM JST time (9:00 AM–12:00 PM GST). That is roughly 3 hours of usable overlap.
- Booking travel or deliveries: tracking GST local time against Tokyo keeps pickup windows and arrival estimates honest across the -5h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM JST" is unambiguous; "3 PM" across a -5h gap is not.
- Block 2:00 PM–5:00 PM JST as the recurring meeting window if you work primarily from Tokyo and need GST colleagues present.
About JST (Japan Standard Time)
Japan Standard Time (JST) is the standard time zone for all of Japan. Japan does not observe daylight saving time. JST is 9 hours ahead of UTC and 14 hours ahead of EST. The Tokyo Stock Exchange, the world's third largest by market capitalization, operates on JST. South Korea uses the same offset (KST) but it is a distinct time zone.
About GST (Gulf Standard Time)
Gulf Standard Time (GST) is the time zone used in the United Arab Emirates, Oman, and other Gulf states. GST does not observe daylight saving time. Dubai and Abu Dhabi, major international business and tourism hubs, operate on GST.
Best time to call between Tokyo and GST
Both Tokyo and GST sit inside the 9 AM – 5 PM working day between 2:00 PM–5:00 PM JST, which is 9:00 AM–12:00 PM GST. That gives roughly 3 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Tokyo and GST overlap for about 3 hours during the working day — enough for meetings if you avoid the edges of the window.
Tokyo is 5 hours behind GST (JST UTC+09:00 → GST UTC+04:00). The shared working window is 2:00 PM–5:00 PM JST. Remember to re-check around daylight-saving transitions.
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between Tokyo and GST?
Tokyo (JST, UTC+09:00) is 5 hours behind GST (GST, UTC+04:00). The gap is currently -5h.
How do I convert Tokyo time to GST time?
Add -5h to Tokyo local time. For example, 9:00 AM in Tokyo is 4:00 AM in GST.
What time is it in GST right now?
GST uses GST at UTC+04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -5h offset from Tokyo.
What is the best time to call GST from Tokyo?
Call between 2:00 PM and 5:00 PM JST — that maps to 9:00 AM–12:00 PM GST and keeps both parties inside the working day.
Which is behind, Tokyo or GST?
Tokyo is 5 hours behind GST. When it is 12:00 PM in Tokyo it is 7:00 AM in GST.
Do Tokyo and GST use different time zones?
Tokyo (Japan) uses JST at UTC+09:00, while GST uses GST at UTC+04:00. The IANA identifiers are Asia/Tokyo and Asia/Dubai.
Does daylight saving time affect the Tokyo–GST difference?
Neither zone observes daylight saving time, so the -5h offset between Tokyo and GST is fixed all year.
Which other cities share Tokyo's time zone?
JST also covers Tokyo, Osaka, Yokohama, Nagoya, Sapporo, Kyoto, Kobe, Fukuoka and 1 more.
Which countries use JST, Tokyo's zone?
JST is used in Japan.
Is there a day difference between Tokyo and GST?
Not normally. The -5h gap only pushes the date over the previous day.
What is the time difference between Tokyo and GST?
GST is -5h from Tokyo.
What timezone is Tokyo in?
Tokyo operates on Japan Standard Time (JST), which is 14 hours ahead of New York. As Asia's largest financial hub, Tokyo trading hours are crucial for global markets.
What timezone is GST in?
GST operates on its local timezone.
What are the business hours in Tokyo?
Standard business hours in Tokyo are 9:00 AM - 6:00 PM JST.
Which countries use JST (Japan Standard Time)?
JST is used in Japan.
Does JST observe daylight saving time?
No, JST does not observe daylight saving time and remains at UTC+09:00 year-round.
What are some interesting facts about JST?
Japan does not observe daylight saving time. Tokyo is the most populous metropolitan area in the world.
Which cities are in the GST timezone?
Major cities in the GST timezone include Dubai, Abu Dhabi, Muscat, Baku, Tbilisi.
What is the UTC offset for GST?
Gulf Standard Time (GST) is at UTC+04:00.
What should I know about the GST timezone?
Dubai uses GST year-round with no daylight saving time. GST is 9 hours ahead of EST and 4 hours ahead of GMT.
When is it midnight in Tokyo, what time is it in GST?
When it is 12:00 AM (midnight) in Tokyo (JST), it is -5h later in GST (GST).
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