HST to PST Time Converter
PST is 3 hours ahead of HST. HST is UTC-10:00, and The US West Coast is currently on PDT (UTC-7:00).
Best Time to Call Between HST and PST
Both zones are inside normal business hours between 9:00 AM and 2:00 PM HST — that's 12:00 PM to 5:00 PM PST. That's a 5-hour window.
both at work HST only PST only neither — hours along the strip are HST.
Common Times Converted
HST on the left, PST on the right.
HST to PST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| HST | PST | Working hours |
|---|---|---|
| 12:00 AM | 3:00 AM | — |
| 1:00 AM | 4:00 AM | — |
| 2:00 AM | 5:00 AM | — |
| 3:00 AM | 6:00 AM | — |
| 4:00 AM | 7:00 AM | — |
| 5:00 AM | 8:00 AM | — |
| 6:00 AM | 9:00 AM | PST only |
| 7:00 AM | 10:00 AM | PST only |
| 8:00 AM | 11:00 AM | PST only |
| 9:00 AM | 12:00 PM | Both zones |
| 10:00 AM | 1:00 PM | Both zones |
| 11:00 AM | 2:00 PM | Both zones |
| 12:00 PM | 3:00 PM | Both zones |
| 1:00 PM | 4:00 PM | Both zones |
| 2:00 PM | 5:00 PM | HST only |
| 3:00 PM | 6:00 PM | HST only |
| 4:00 PM | 7:00 PM | HST only |
| 5:00 PM | 8:00 PM | — |
| 6:00 PM | 9:00 PM | — |
| 7:00 PM | 10:00 PM | — |
| 8:00 PM | 11:00 PM | — |
| 9:00 PM | 12:00 AM next day | — |
| 10:00 PM | 1:00 AM next day | — |
| 11:00 PM | 2:00 AM next day | — |
What HST and PST Actually Are
HST — Hawaii Standard Time
Honolulu and the rest of Hawaii. Standing at UTC-10:00 as written, and the region does not change its clocks, so that offset holds all year. Hawaii does not observe daylight saving, so this offset holds all year.
Hawaii dropped daylight saving in 1967 and never resumed it. Being close to the equator, its daylight barely varies across the year, so there is little to gain.
PST — Pacific Standard Time
Los Angeles, San Francisco, Seattle, Las Vegas, Vancouver. Standing at UTC-8:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to PST. The Philippines occasionally uses PST for Philippine Standard Time (UTC+8); PHT is the clearer label for that.
California voted in 2018 to move to permanent daylight time, but the change needs an act of Congress and has never happened, so PST is still the winter standard.
What This Means in Practice
This gap is not fixed
PST changes its clocks and HST does not, so the difference between them moves by an hour twice a year. A recurring meeting set now will drift for one side from Sunday, November 1, 2026 unless someone resets it.
Major Cities in Each Zone
Cities on HST
Cities on PST
Frequently Asked Questions
What is the time difference between HST and PST?
PST is 3 hours ahead of HST. That is the live figure. Taken strictly as written, the gap between HST and PST is 2 hours — the two differ because at least one of these regions is currently on daylight saving.
What is 9:00 AM HST in PST?
9:00 AM HST is 12:00 PM PST.
What are the best hours to schedule a call between HST and PST?
Between 9:00 AM and 2:00 PM HST, which is 12:00 PM to 5:00 PM PST. Both sides are inside normal business hours through that window.
Does the difference between HST and PST change during the year?
Yes. PST observes daylight saving and HST does not, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.
Does HST always mean Hawaii Standard Time?
Hawaii does not observe daylight saving, so this offset holds all year.
Does PST always mean Pacific Standard Time?
The Philippines occasionally uses PST for Philippine Standard Time (UTC+8); PHT is the clearer label for that.