SGT to HST Converter
HST is 18 hours behind SGT
SGT to HST Conversion Table
Green rows indicate standard business hours (9 AM – 5 PM) in HST
| SGT | HST |
|---|---|
| 12:00 AM | 6:00 AM -1d |
| 1:00 AM | 7:00 AM -1d |
| 2:00 AM | 8:00 AM -1d |
| 3:00 AM | 9:00 AM -1d |
| 4:00 AM | 10:00 AM -1d |
| 5:00 AM | 11:00 AM -1d |
| 6:00 AM | 12:00 PM -1d |
| 7:00 AM | 1:00 PM -1d |
| 8:00 AM | 2:00 PM -1d |
| 9:00 AM | 3:00 PM -1d |
| 10:00 AM | 4:00 PM -1d |
| 11:00 AM | 5:00 PM -1d |
| 12:00 PM | 6:00 PM -1d |
| 1:00 PM | 7:00 PM -1d |
| 2:00 PM | 8:00 PM -1d |
| 3:00 PM | 9:00 PM -1d |
| 4:00 PM | 10:00 PM -1d |
| 5:00 PM | 11:00 PM -1d |
| 6:00 PM | 12:00 AM |
| 7:00 PM | 1:00 AM |
| 8:00 PM | 2:00 AM |
| 9:00 PM | 3:00 AM |
| 10:00 PM | 4:00 AM |
| 11:00 PM | 5:00 AM |
Converting Singapore Time to Hawaii Standard Time
Singapore Time (SGT) and Hawaii Standard Time (HST) are separated by a 18 hours time difference. HST is 18 hours behind SGT. SGT is UTC+8, used in Singapore, while HST is UTC-10, used in United States.
When converting from SGT to HST, the key reference points to remember are: 9:00 AM SGT equals 3:00 PM HST, 12:00 PM noon SGT equals 6:00 PM HST, and 5:00 PM SGT equals 11:00 PM HST. The conversion table above shows every hour of the day mapped between these two time zones.
Scheduling Across SGT and HST
For professionals scheduling meetings between SGT and HST, finding overlapping business hours is essential. Standard business hours are typically 9:00 AM to 5:00 PM in each time zone. Given the 18 hours difference, the window of overlap may be limited, making early morning or late evening calls necessary for one party. Use the highlighted working hours in the conversion table above to quickly identify suitable meeting times.
Daylight Saving Time Considerations
SGT does not observe Daylight Saving Time, maintaining UTC+8 year-round. HST does not observe DST, staying at UTC-10 year-round.