HSTtoPSTHawaii Standard Time to Pacific Standard Time
HST
Hawaii Standard Time (HST)PST
Pacific Standard Time (PDT)Mutual Working Window: 5 Overlapping Hours
Recommended calling window between HST and PST
Both locations share 5 overlapping standard business hours (9:00 AM – 5:00 PM). This is the premier window for real-time video conferences, corporate calls, and instant collaboration without outside-hours disruption.
24-Hour Schedule Conversion Matrix
Compare every hour of the day between HST and PST.
| HST Time (Hawaii Standard Time) | PST Time (Pacific Standard Time) | Status & Recommendation |
|---|---|---|
| 00:00AM | 03:00AM | ⚪ Outside Work Hours |
| 01:00AM | 04:00AM | ⚪ Outside Work Hours |
| 02:00AM | 05:00AM | ⚪ Outside Work Hours |
| 03:00AM | 06:00AM | ⚪ Outside Work Hours |
| 04:00AM | 07:00AM | ⚪ Outside Work Hours |
| 05:00AM | 08:00AM | ⚪ Outside Work Hours |
| 06:00AM | 09:00AM | ⚪ Outside Work Hours |
| 07:00AM | 10:00AM | ⚪ Outside Work Hours |
| 08:00AM | 11:00AM | ⚪ Outside Work Hours |
| 09:00AM | 12:00PM | 🟢 Ideal Meeting Window |
| 10:00AM | 13:00PM | 🟢 Ideal Meeting Window |
| 11:00AM | 14:00PM | 🟢 Ideal Meeting Window |
| 12:00PM | 15:00PM | 🟢 Ideal Meeting Window |
| 13:00PM | 16:00PM | 🟢 Ideal Meeting Window |
| 14:00PM | 17:00PM | 🟡 Feasible (Shoulder Hour) |
| 15:00PM | 18:00PM | 🟡 Feasible (Shoulder Hour) |
| 16:00PM | 19:00PM | 🟡 Feasible (Shoulder Hour) |
| 17:00PM | 20:00PM | ⚪ Outside Work Hours |
| 18:00PM | 21:00PM | ⚪ Outside Work Hours |
| 19:00PM | 22:00PM | ⚪ Outside Work Hours |
| 20:00PM | 23:00PM | ⚪ Outside Work Hours |
| 21:00PM | 00:00AM | ⚪ Outside Work Hours |
| 22:00PM | 01:00AM | ⚪ Outside Work Hours |
| 23:00PM | 02:00AM | ⚪ Outside Work Hours |
Frequently Asked Questions
What is the time difference between HST and PST?
PST is 3 hours ahead of HST. When it is 12:00 PM (noon) in HST, the current synchronized time in PST is 3:00 PM.
What are the overlapping working hours between HST and PST?
There are 5 overlapping standard business hours (9:00 AM – 5:00 PM) between HST and PST. The optimal scheduling window is 9:00 AM – 2:00 PM in HST (12:00 PM – 5:00 PM in PST).
Does daylight saving time affect the conversion between HST and PST?
Yes. PST observes daylight saving shifts (PDT), shifting the offset difference by 1 hour between summer and winter while HST stays on fixed standard time year-round.
What regions and major cities observe HST and PST?
HST (Hawaii Standard Time) is primarily observed across Central Pacific (State of Hawaii) (key hubs include Honolulu, Hilo, Kahului). PST (Pacific Standard Time) is observed across Western North America (US West Coast & British Columbia) (key hubs include Los Angeles, San Francisco, Seattle, Vancouver).
What is 9:00 AM HST in PST?
9:00 AM in HST corresponds to 12:00 PM in PST. You can cross-reference every hour of the day in the 24-hour visual schedule table above.
Which time zone is ahead, HST or PST?
PST is ahead by 3 hours.