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