ET to HST Time Converter
HST is 6 hours behind ET. The US East Coast is currently on EDT (UTC-4:00), and HST is UTC-10:00.
Best Time to Call Between ET and HST
Both zones are inside normal business hours between 3:00 PM and 5:00 PM ET — that's 9:00 AM to 11:00 AM HST. That's a 2-hour window.
both at work ET only HST only neither — hours along the strip are ET.
Common Times Converted
ET on the left, HST on the right.
ET to HST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| ET | HST | Working hours |
|---|---|---|
| 12:00 AM | 6:00 PM prev day | — |
| 1:00 AM | 7:00 PM prev day | — |
| 2:00 AM | 8:00 PM prev day | — |
| 3:00 AM | 9:00 PM prev day | — |
| 4:00 AM | 10:00 PM prev day | — |
| 5:00 AM | 11:00 PM prev day | — |
| 6:00 AM | 12:00 AM | — |
| 7:00 AM | 1:00 AM | — |
| 8:00 AM | 2:00 AM | — |
| 9:00 AM | 3:00 AM | ET only |
| 10:00 AM | 4:00 AM | ET only |
| 11:00 AM | 5:00 AM | ET only |
| 12:00 PM | 6:00 AM | ET only |
| 1:00 PM | 7:00 AM | ET only |
| 2:00 PM | 8:00 AM | ET only |
| 3:00 PM | 9:00 AM | Both zones |
| 4:00 PM | 10:00 AM | Both zones |
| 5:00 PM | 11:00 AM | HST only |
| 6:00 PM | 12:00 PM | HST only |
| 7:00 PM | 1:00 PM | HST only |
| 8:00 PM | 2:00 PM | HST only |
| 9:00 PM | 3:00 PM | HST only |
| 10:00 PM | 4:00 PM | HST only |
| 11:00 PM | 5:00 PM | — |
What ET and HST Actually Are
ET — Eastern Time
New York, Toronto, Washington DC, Atlanta, Miami, Boston. Standing at UTC-5:00 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 EST.
Eastern Time covers roughly half the US population and, because of that, is the zone most American business defaults to when nobody specifies one.
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.
What This Means in Practice
This gap is not fixed
ET 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 ET
Cities on HST
Frequently Asked Questions
What is the time difference between ET and HST?
HST is 6 hours behind ET. That is the live figure. Taken strictly as written, the gap between ET and HST is 5 hours — the two differ because at least one of these regions is currently on daylight saving.
What is 9:00 AM ET in HST?
9:00 AM ET is 3:00 AM HST.
What are the best hours to schedule a call between ET and HST?
Between 3:00 PM and 5:00 PM ET, which is 9:00 AM to 11:00 AM HST. Both sides are inside normal business hours through that window.
Does the difference between ET and HST change during the year?
Yes. ET 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.