UTC offset

UTC-10:00

HSTTAHT
Quick answer

UTC-10:00 is 10 hours behind UTC. Countries and territories using this offset include: United States, French Polynesia.

Common abbreviations at this offset: HST, TAHT.

Timezone abbreviations at UTC-10:00

Other UTC offsets

Frequently Asked Questions

UTC-10:00 is 10 hours behind UTC. Countries and territories using this offset include: United States, French Polynesia.

Common abbreviations at this offset: HST, TAHT.

UTC-10:00 is 10 hours behind Coordinated Universal Time (UTC).

Some zones at UTC-10:00 observe daylight saving time and shift to a different offset during summer, while others stay on UTC-10:00 year-round. Check a specific country's DST page to see its exact behavior.

IANA zones at UTC-10:00 include: Pacific/Honolulu, Pacific/Tahiti. Additional zones may match during DST transitions.