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