GST to EST
-9hGST
GSTSOURCEEST
ESTGreen rows indicate typical business hours (9 AM - 5 PM)
GST and EST on the World Map
The map below highlights the GST (Gulf Standard Time) and EST (Eastern Standard Time) timezone regions across the globe.
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.
EST – Eastern Standard Time
UTC-05:00Eastern Standard Time (EST) is the time zone for the eastern United States and Canada, 5 hours behind UTC.
- •EST is the most widely used time zone in the United States by population.
- •The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
- •23 US states are fully or partially in the Eastern Time Zone.
- •EST was established by the Standard Time Act of 1918.
- •Over 47% of the US population lives in the Eastern Time Zone.
Time Conversion Guide: GST to EST
GST runs on Gulf Standard Time (GST) at UTC+04:00. EST runs on Eastern Standard Time (EST) at UTC-05:00. That puts GST 9 hours behind EST — a difference of -9h at the current offsets.
In practice, when it is 9:00 AM in GST it is 12:00 AM in EST. Midnight in GST is 3:00 PM in EST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
GST to EST time conversion table
| GST (GST) | EST (EST) | Day |
|---|---|---|
| 12:00 AM | 3:00 PM | previous day |
| 6:00 AM | 9:00 PM | previous day |
| 7:00 AM | 10:00 PM | previous day |
| 8:00 AM | 11:00 PM | previous day |
| 9:00 AM | 12:00 AM | same day |
| 12:00 PM | 3:00 AM | same day |
| 3:00 PM | 6:00 AM | same day |
| 5:00 PM | 8:00 AM | same day |
| 6:00 PM | 9:00 AM | same day |
| 9:00 PM | 12:00 PM | same day |
Why people convert GST to EST time
- Scheduling a call from GST to EST: a 10:00 AM start in GST lands at 1:00 AM in EST, so you can confirm the slot without doing the arithmetic yourself.
- Handling a -9h gap: GST and EST have no overlap inside a normal 9-to-5 day, so real-time meetings need an early-morning or late-evening slot on one side. 9:00 AM in EST is 12:00 AM in GST.
- Booking travel or deliveries: tracking EST local time against GST keeps pickup windows and arrival estimates honest across the -9h offset.
- Always state the zone abbreviation, not just the hour. "3:00 PM GST" is unambiguous; "3 PM" across a -9h gap is not.
- With a -9h gap there is no shared 9-to-5 window, so alternate the early start: one week GST takes the early slot, the next week EST does.
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.
About EST (Eastern Standard Time)
Eastern Standard Time (EST) is observed during the winter months in the eastern part of North America. It covers 23 US states and parts of Canada including Ontario and Quebec. EST is the most populous time zone in the United States, home to major financial centers like New York City and global organizations headquartered in Washington D.C. During daylight saving time (March–November), clocks shift to Eastern Daylight Time (EDT, UTC-04:00). The time zone also covers parts of the Caribbean and Central America including Panama, Jamaica, and the Cayman Islands.
Best time to call between GST and EST
With a -9h offset there is no overlap inside a normal 9 AM – 5 PM day. EST opens at 9:00 AM EST, which is 12:00 AM in GST, so real-time calls need an early-morning or late-evening slot on one side.
Business hours overlap
GST and EST have no shared working hours because of the -9h gap. Teams need to alternate early starts or rely on asynchronous handovers.
GST is 9 hours behind EST (GST UTC+04:00 → EST UTC-05:00). There is no shared 9-to-5 window, so plan around an early or late slot. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
GST
Does not observe DST
EST
☀ Currently in DST
Standard: UTC-05:00 · DST: UTC-04:00
Clocks fall back on Sun, Nov 1, 2026
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 GST and EST?
GST (GST, UTC+04:00) is 9 hours behind EST (EST, UTC-05:00). The gap is currently -9h.
How do I convert GST time to EST time?
Add -9h to GST local time. For example, 9:00 AM in GST is 12:00 AM in EST.
What time is it in EST right now?
EST uses EST at UTC-05:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -9h offset from GST.
What is the best time to call EST from GST?
There is no shared working-hours window because of the -9h gap. The closest option is 1:00 PM in GST, which is 4:00 AM in EST.
Which is behind, GST or EST?
GST is 9 hours behind EST. When it is 12:00 PM in GST it is 3:00 AM in EST.
Does daylight saving time affect the GST–EST difference?
Neither zone observes daylight saving time, so the -9h offset between GST and EST is fixed all year.
Which other cities share GST's time zone?
GST also covers Dubai, Abu Dhabi, Muscat, Baku, Tbilisi.
Which countries use GST, GST's zone?
GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.
Is there a day difference between GST and EST?
Not normally. The -9h gap only pushes the date over the previous day.
What is the time difference between GST and EST?
EST is -9h from GST.
What timezone is GST in?
GST operates on its local timezone.
What timezone is EST in?
EST operates on its local timezone.
Which countries use GST (Gulf Standard Time)?
GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.
Does GST observe daylight saving time?
No, GST does not observe daylight saving time and remains at UTC+04:00 year-round.
What are some interesting facts about GST?
Dubai uses GST year-round with no daylight saving time. GST is 9 hours ahead of EST and 4 hours ahead of GMT.
Which cities are in the EST timezone?
Major cities in the EST timezone include New York City, Washington D.C., Miami, Toronto, Philadelphia, Atlanta, Boston, Montreal.
What is the UTC offset for EST?
Eastern Standard Time (EST) is at UTC-05:00. During daylight saving time, it shifts to EDT.
What should I know about the EST timezone?
EST is the most widely used time zone in the United States by population. The New York Stock Exchange (NYSE) and NASDAQ operate on Eastern Time, opening at 9:30 AM EST.
When is it midnight in GST, what time is it in EST?
When it is 12:00 AM (midnight) in GST (GST), it is -9h later in EST (EST).
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