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GST to GMT converter
Gulf Standard Time
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Greenwich Mean Time
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Greenwich Mean Time is always 4 hours behind Gulf Standard Time.
When does the difference change?
The difference stays the same all year: GMT is 4 hours behind GST.
Questions
What time is 9 AM GST in GMT?
9 AM Gulf Standard Time is 5 AM Greenwich Mean Time.
How many hours ahead or behind is GMT from GST?
Greenwich Mean Time is always 4 hours behind Gulf Standard Time.
Does the GST to GMT difference change?
No, it stays the same all year.
About these time zones
GST to GMT, hour by hour
| Gulf Standard Time | Greenwich Mean Time |
|---|---|
| 12 AM | 8 PM (previous day) |
| 1 AM | 9 PM (previous day) |
| 2 AM | 10 PM (previous day) |
| 3 AM | 11 PM (previous day) |
| 4 AM | 12 AM |
| 5 AM | 1 AM |
| 6 AM | 2 AM |
| 7 AM | 3 AM |
| 8 AM | 4 AM |
| 9 AM | 5 AM |
| 10 AM | 6 AM |
| 11 AM | 7 AM |
| 12 PM | 8 AM |
| 1 PM | 9 AM |
| 2 PM | 10 AM |
| 3 PM | 11 AM |
| 4 PM | 12 PM |
| 5 PM | 1 PM |
| 6 PM | 2 PM |
| 7 PM | 3 PM |
| 8 PM | 4 PM |
| 9 PM | 5 PM |
| 10 PM | 6 PM |
| 11 PM | 7 PM |
Based on the clocks on Monday, October 12, 2026. Use the converter above for another date.