GST to EST Time Converter
EST is 8 hours behind GST. GST is UTC+4:00, and The US East Coast is currently on EDT (UTC-4:00).
Best Time to Call Between GST and EST
Standard 9-to-5 hours in these two zones never overlap, so someone has to take the call outside their working day. The most workable window is 3:00 PM to 10:00 PM GST, which is 7:00 AM to 2:00 PM EST.
both at work GST only EST only neither — hours along the strip are GST.
Common Times Converted
GST on the left, EST on the right.
GST to EST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| GST | EST | Working hours |
|---|---|---|
| 12:00 AM | 4:00 PM prev day | EST only |
| 1:00 AM | 5:00 PM prev day | — |
| 2:00 AM | 6:00 PM prev day | — |
| 3:00 AM | 7:00 PM prev day | — |
| 4:00 AM | 8:00 PM prev day | — |
| 5:00 AM | 9:00 PM prev day | — |
| 6:00 AM | 10:00 PM prev day | — |
| 7:00 AM | 11:00 PM prev day | — |
| 8:00 AM | 12:00 AM | — |
| 9:00 AM | 1:00 AM | GST only |
| 10:00 AM | 2:00 AM | GST only |
| 11:00 AM | 3:00 AM | GST only |
| 12:00 PM | 4:00 AM | GST only |
| 1:00 PM | 5:00 AM | GST only |
| 2:00 PM | 6:00 AM | GST only |
| 3:00 PM | 7:00 AM | GST only |
| 4:00 PM | 8:00 AM | GST only |
| 5:00 PM | 9:00 AM | EST only |
| 6:00 PM | 10:00 AM | EST only |
| 7:00 PM | 11:00 AM | EST only |
| 8:00 PM | 12:00 PM | EST only |
| 9:00 PM | 1:00 PM | EST only |
| 10:00 PM | 2:00 PM | EST only |
| 11:00 PM | 3:00 PM | EST only |
What GST and EST Actually Are
GST — Gulf Standard Time
Dubai, Abu Dhabi, Sharjah, Muscat. Standing at UTC+4:00 as written, and the region does not change its clocks, so that offset holds all year. GST also refers to South Georgia Time (UTC-2), which you are very unlikely to want.
The Gulf states have never observed daylight saving, so Dubai's offset has been unchanged for decades — unusual stability for a region that grew as fast as it did.
EST — Eastern Standard Time
New York, Toronto, Washington DC, Atlanta, Miami, Boston. Standing at UTC-5:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to EST. Australia also uses EST for its own Eastern Standard Time (UTC+10), now more often written AEST.
Eastern Standard Time is only actually in force from early November to mid-March. For the other eight months the same region is on EDT, which is why so many EST conversions are quietly wrong.
What This Means in Practice
This gap is not fixed
EST changes its clocks and GST does not, so the difference between them moves by an hour twice a year. A recurring meeting set now will drift for one side from Sunday, November 1, 2026 unless someone resets it.
Major Cities in Each Zone
Cities on GST
Cities on EST
Frequently Asked Questions
What is the time difference between GST and EST?
EST is 8 hours behind GST. That is the live figure. Taken strictly as written, the gap between GST and EST is 9 hours — the two differ because at least one of these regions is currently on daylight saving.
What is 9:00 AM GST in EST?
9:00 AM GST is 1:00 AM EST.
What are the best hours to schedule a call between GST and EST?
Standard business hours in these two zones do not overlap at all, so one side has to work outside the 9-to-5. The most workable window is 3:00 PM to 10:00 PM GST, which is 7:00 AM to 2:00 PM EST.
Does the difference between GST and EST change during the year?
Yes. EST observes daylight saving and GST does not, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.
Does GST always mean Gulf Standard Time?
GST also refers to South Georgia Time (UTC-2), which you are very unlikely to want.
Does EST always mean Eastern Standard Time?
Australia also uses EST for its own Eastern Standard Time (UTC+10), now more often written AEST.