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Time difference between Singapore and Honolulu

Honolulu is 18 hours behind Singapore

Singapore, Singapore is UTC+8 · Honolulu, the United States is UTC−10 — on standard time

The gap holds all year

Neither city changes its clocks — Singapore does not change its clocks and Honolulu does not change its clocks — so 18 hours is the difference in January and in July alike. That is worth knowing about this pair specifically, because most international pairs do move and a recurring meeting between them does not need checking twice a year.

When they can both be at their desks

Nine-to-five in Singapore and nine-to-five in Honolulu do not overlap at all. With 18 hours between them, one side is always outside working hours, and the practical question is which side takes the early start or the late finish rather than when to meet.

Singapore to Honolulu, hour by hour

SingaporeHonolulu
12:00 AM6:00 AM (previous day)
1:00 AM7:00 AM (previous day)
2:00 AM8:00 AM (previous day)
3:00 AM9:00 AM (previous day)
4:00 AM10:00 AM (previous day)
5:00 AM11:00 AM (previous day)
6:00 AM12:00 PM (previous day)
7:00 AM1:00 PM (previous day)
8:00 AM2:00 PM (previous day)
9:00 AM3:00 PM (previous day)
10:00 AM4:00 PM (previous day)
11:00 AM5:00 PM (previous day)
12:00 PM6:00 PM (previous day)
1:00 PM7:00 PM (previous day)
2:00 PM8:00 PM (previous day)
3:00 PM9:00 PM (previous day)
4:00 PM10:00 PM (previous day)
5:00 PM11:00 PM (previous day)
6:00 PM12:00 AM
7:00 PM1:00 AM
8:00 PM2:00 AM
9:00 PM3:00 AM
10:00 PM4:00 AM
11:00 PM5:00 AM

On the usual gap of 18 hours.

Frequently asked questions

What is the time difference between Singapore and Honolulu?

Honolulu is 18 hours behind Singapore for most of the year. The gap never changes: Singapore does not change its clocks and Honolulu does not change its clocks.

Is Honolulu ahead of Singapore?

No — Honolulu is 18 hours behind. Singapore is UTC+8 and Honolulu is UTC−10 on standard time.

What time is 9 AM in Singapore in Honolulu?

3:00 PM (previous day), on the usual gap.

When can Singapore and Honolulu meet?

Nine-to-five in Singapore and nine-to-five in Honolulu do not overlap at all. One side has to take the call outside working hours, and with 18 hours between them it is worth deciding in advance which side that is.

Other pairs

Every Singapore pair · Every Honolulu pair · All city pairs · Time zones by abbreviation