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DateAlmanac

What is TRT in HST?

Hawaii Standard Time is 13 hours behind

Turkey Time is on UTC+3:00 and Hawaii Standard Time is on UTC−10:00 right now. That gap holds all year, because neither zone observes daylight saving.

Convert a time

HST — Hawaii Standard Time

10:00 pm

HST, Fri, the previous day

Time in Istanbul
11:29:56 AM
Time in Honolulu
10:29:56 PM
Difference
−13 h
Next clock change
Neither zone

Daylight saving

Turkey Time

No clock changes

Turkey Time stays on TRT all year, so its offset from UTC never moves.

Hawaii Standard Time

No clock changes

Hawaii Standard Time stays on HST all year, so its offset from UTC never moves.

TRT to HST conversion table

Every hour of Saturday, November 7, 2026, converted from Turkey Time to Hawaii Standard Time. 13 of the 24 hours fall on a different calendar day in Honolulu, which is marked.

12:00 am TRT
11:00 am HST−1 day
1:00 am TRT
12:00 pm HST−1 day
2:00 am TRT
1:00 pm HST−1 day
3:00 am TRT
2:00 pm HST−1 day
4:00 am TRT
3:00 pm HST−1 day
5:00 am TRT
4:00 pm HST−1 day
6:00 am TRT
5:00 pm HST−1 day
7:00 am TRT
6:00 pm HST−1 day
8:00 am TRT
7:00 pm HST−1 day
9:00 am TRT
8:00 pm HST−1 day
10:00 am TRT
9:00 pm HST−1 day
11:00 am TRT
10:00 pm HST−1 day
12:00 pm TRT
11:00 pm HST−1 day
1:00 pm TRT
12:00 am HST
2:00 pm TRT
1:00 am HST
3:00 pm TRT
2:00 am HST
4:00 pm TRT
3:00 am HST
5:00 pm TRT
4:00 am HST
6:00 pm TRT
5:00 am HST
7:00 pm TRT
6:00 am HST
8:00 pm TRT
7:00 am HST
9:00 pm TRT
8:00 am HST
10:00 pm TRT
9:00 am HST
11:00 pm TRT
10:00 am HST

Scheduling between the two

There is no overlap between a nine-to-six working day in Istanbul and one in Honolulu — the gap is too wide. A call has to sit early or late for one side. Early morning in Istanbul is the usual compromise, since that is late afternoon or evening in Honolulu.

Turkey Time (TRT) is used in all of Türkiye, on a permanent UTC+3 since 2016

Hawaii Standard Time (HST) is used in all of Hawaii, which does not observe daylight saving

Other conversions