CLT to HST Time Converter
HST is 7 hours behind CLT. Chile is currently on UTC-3:00, and HST is UTC-10:00.
Best Time to Call Between CLT and HST
Both zones are inside normal business hours between 4:00 PM and 5:00 PM CLT — that's 9:00 AM to 10:00 AM HST. That's a 1-hour window.
both at work CLT only HST only neither — hours along the strip are CLT.
Common Times Converted
CLT on the left, HST on the right.
CLT to HST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| CLT | HST | Working hours |
|---|---|---|
| 12:00 AM | 5:00 PM prev day | — |
| 1:00 AM | 6:00 PM prev day | — |
| 2:00 AM | 7:00 PM prev day | — |
| 3:00 AM | 8:00 PM prev day | — |
| 4:00 AM | 9:00 PM prev day | — |
| 5:00 AM | 10:00 PM prev day | — |
| 6:00 AM | 11:00 PM prev day | — |
| 7:00 AM | 12:00 AM | — |
| 8:00 AM | 1:00 AM | — |
| 9:00 AM | 2:00 AM | CLT only |
| 10:00 AM | 3:00 AM | CLT only |
| 11:00 AM | 4:00 AM | CLT only |
| 12:00 PM | 5:00 AM | CLT only |
| 1:00 PM | 6:00 AM | CLT only |
| 2:00 PM | 7:00 AM | CLT only |
| 3:00 PM | 8:00 AM | CLT only |
| 4:00 PM | 9:00 AM | Both zones |
| 5:00 PM | 10:00 AM | HST only |
| 6:00 PM | 11:00 AM | HST only |
| 7:00 PM | 12:00 PM | HST only |
| 8:00 PM | 1:00 PM | HST only |
| 9:00 PM | 2:00 PM | HST only |
| 10:00 PM | 3:00 PM | HST only |
| 11:00 PM | 4:00 PM | HST only |
What CLT and HST Actually Are
CLT — Chile Standard Time
Santiago, Valparaíso, Concepción. Standing at UTC-4:00 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 Saturday, April 3, 2027, to -04. Chile still changes its clocks, moving to CLST (UTC-3) for the southern summer.
Chile is one of very few countries still moving its clocks, and the Magallanes region in the far south stays on UTC-3 permanently while the rest of the country switches.
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
CLT 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 Saturday, April 3, 2027 unless someone resets it.
Major Cities in Each Zone
Cities on CLT
Cities on HST
Frequently Asked Questions
What is the time difference between CLT and HST?
HST is 7 hours behind CLT. That is the live figure. Taken strictly as written, the gap between CLT and HST is 6 hours — the two differ because at least one of these regions is currently on daylight saving.
What is 9:00 AM CLT in HST?
9:00 AM CLT is 2:00 AM HST.
What are the best hours to schedule a call between CLT and HST?
Between 4:00 PM and 5:00 PM CLT, which is 9:00 AM to 10:00 AM HST. Both sides are inside normal business hours through that window.
Does the difference between CLT and HST change during the year?
Yes. CLT 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 Saturday, April 3, 2027.
Does CLT always mean Chile Standard Time?
Chile still changes its clocks, moving to CLST (UTC-3) for the southern summer.
Does HST always mean Hawaii Standard Time?
Hawaii does not observe daylight saving, so this offset holds all year.