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GST to EST converter
Gulf Standard Time
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Eastern Time
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Eastern Time is 8 hours behind Gulf Standard Time for most of the year, and 9 hours behind for part of it, because the two change their clocks on different dates (or only one of them changes at all).
When does the difference change?
In 2026:
- January 1 to March 7: Eastern Time is 9 hours behind Gulf Standard Time
- March 8 to October 31: Eastern Time is 8 hours behind Gulf Standard Time
- November 1 to December 31: Eastern Time is 9 hours behind Gulf Standard Time
Questions
What time is 9 AM GST in EST?
For most of the year, 9 AM Gulf Standard Time is 1 AM Eastern Time. For part of the year it is 12 AM, because of daylight saving time.
How many hours ahead or behind is EST from GST?
Eastern Time is 8 hours behind Gulf Standard Time for most of the year, and 9 hours behind for part of it, because the two change their clocks on different dates (or only one of them changes at all).
Does the GST to EST difference change?
Yes. It changes 2 times in 2026 because of daylight saving time.
About these time zones
GST to EST, hour by hour
| Gulf Standard Time | Eastern Time |
|---|---|
| 12 AM | 4 PM (previous day) |
| 1 AM | 5 PM (previous day) |
| 2 AM | 6 PM (previous day) |
| 3 AM | 7 PM (previous day) |
| 4 AM | 8 PM (previous day) |
| 5 AM | 9 PM (previous day) |
| 6 AM | 10 PM (previous day) |
| 7 AM | 11 PM (previous day) |
| 8 AM | 12 AM |
| 9 AM | 1 AM |
| 10 AM | 2 AM |
| 11 AM | 3 AM |
| 12 PM | 4 AM |
| 1 PM | 5 AM |
| 2 PM | 6 AM |
| 3 PM | 7 AM |
| 4 PM | 8 AM |
| 5 PM | 9 AM |
| 6 PM | 10 AM |
| 7 PM | 11 AM |
| 8 PM | 12 PM |
| 9 PM | 1 PM |
| 10 PM | 2 PM |
| 11 PM | 3 PM |
Based on the clocks on Monday, October 12, 2026. Use the converter above for another date.