The short answer
Hawaii Time is 18 hours behind Singapore Time.
Hawaii Time☀
3:03:56pm
HST · UTC-10:00 · Thu, Sep 24
Singapore Time☀
9:03:56am
+08:00 · UTC+08:00 · Fri, Sep 25
Read across to convert
Hawaii Time
HST · UTC-10:00
Singapore Time
+08:00 · UTC+08:00
Click any row to pin that hour across both zones.
12amThu
6pm
1am
7pm
2am
8pm
3am
9pm
4am
10pm
5am
11pm
6am
12amFri ·+1d
7am
1amFri ·+1d
8am
2amFri ·+1d
9am
WORK3amFri ·+1d
10am
WORK4amFri ·+1d
11am
WORK5amFri ·+1d
12pm
WORK6amFri ·+1d
1pm
WORK7amFri ·+1d
2pm
WORK8amFri ·+1d
NOW
3pm
WORK9amFri ·+1d
WORK4pm
WORK10amFri ·+1d
WORK5pm
11amFri ·+1d
WORK6pm
12pmFri ·+1d
WORK7pm
1pmFri ·+1d
WORK8pm
2pmFri ·+1d
WORK9pm
3pmFri ·+1d
WORK10pm
4pmFri ·+1d
WORK11pm
5pmFri ·+1d
daylightnightworking hoursoverlap
Best time to meet=
Best for a call
Hawaii Time
3pm–5pm
Singapore Time
9am–11am
next day
Popular conversions
Quick reference.
9amHawaii Time=3amSingapore Time · next day
12pmHawaii Time=6amSingapore Time · next day
3pmHawaii Time=9amSingapore Time · next day
5pmHawaii Time=11amSingapore Time · next day
9pmHawaii Time=3pmSingapore Time · next day
In context
What each side covers.
Hawaii Time
3:03pmHST · UTC-10:00
US
Singapore Time
9:03am+08:00 · UTC+08:00
Cities on this clock
Related converters
Other popular pairs.
Pacific Time
6:03pm
India Standard Time
6:33am
Pacific Time to India12 hours 30 minutes behind
Eastern Daylight Time
9:03pm
Central European Time
3:03am
Eastern Time to Central Europe6 hours behind
India Standard Time
6:33am
Eastern Daylight Time
9:03pm
India to Eastern Time9 hours 30 minutes ahead
British Summer Time
2:03am
India Standard Time
6:33am
London to India4 hours 30 minutes behind
Pacific Daylight Time
6:03pm
Eastern Daylight Time
9:03pm
Pacific to Eastern Time3 hours behind
Central European Time
3:03am
India Standard Time
6:33am
Central Europe to India3 hours 30 minutes behind
Frequently asked
Quick answers about converting between Hawaii Time and Singapore Time. Can't find what you need? Email [email protected].
- What is the time difference between Hawaii Time and Singapore Time?
- Hawaii Time is 18 hours behind Singapore Time right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
- When it's 9am in Hawaii Time, what time is it in Singapore Time?
- 9am in Hawaii Time is 3am in Singapore Time on the next day. Use the hour-by-hour table above to read any other time across — find the row and read the matching cell in the other column.
- What's the best time for a call between Hawaii Time and Singapore Time?
- 3pm–5pm in Hawaii Time lines up with 9am–11am in Singapore Time the next day — both sides are inside a 9-to-5 working day.
- Does this account for daylight saving time?
- Yes. We track every clock change in both places, so the abbreviations you see — HST and +08:00 — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
- Why is the date sometimes different on each side?
- When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.