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GST to HST converter
Gulf Standard Time
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Hawaii Time
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Hawaii Time is always 14 hours behind Gulf Standard Time.
When does the difference change?
The difference stays the same all year: HST is 14 hours behind GST.
Questions
What time is 9 AM GST in HST?
9 AM Gulf Standard Time is 7 PM the day before Hawaii Time.
How many hours ahead or behind is HST from GST?
Hawaii Time is always 14 hours behind Gulf Standard Time.
Does the GST to HST difference change?
No, it stays the same all year.
About these time zones
GST to HST, hour by hour
| Gulf Standard Time | Hawaii Time |
|---|---|
| 12 AM | 10 AM (previous day) |
| 1 AM | 11 AM (previous day) |
| 2 AM | 12 PM (previous day) |
| 3 AM | 1 PM (previous day) |
| 4 AM | 2 PM (previous day) |
| 5 AM | 3 PM (previous day) |
| 6 AM | 4 PM (previous day) |
| 7 AM | 5 PM (previous day) |
| 8 AM | 6 PM (previous day) |
| 9 AM | 7 PM (previous day) |
| 10 AM | 8 PM (previous day) |
| 11 AM | 9 PM (previous day) |
| 12 PM | 10 PM (previous day) |
| 1 PM | 11 PM (previous day) |
| 2 PM | 12 AM |
| 3 PM | 1 AM |
| 4 PM | 2 AM |
| 5 PM | 3 AM |
| 6 PM | 4 AM |
| 7 PM | 5 AM |
| 8 PM | 6 AM |
| 9 PM | 7 AM |
| 10 PM | 8 AM |
| 11 PM | 9 AM |
Based on the clocks on Monday, October 12, 2026. Use the converter above for another date.