Sydney to Ko Samui time converter

Ko Samui is 4 hours behind Sydney. When it is 9:00 AM in Sydney, it is 5:00 AM in Ko Samui.

Sydney AEDT

Sunday, October 18, 2026

Ko Samui ICT

Sunday, October 18, 2026

Sydney
New South Wales, Australia
Sun, Oct 18
AEDTUTC+11
Ko Samui
Thailand
Sun, Oct 18
ICTUTC+7-4h
Finding your time zone…
Shared working hours (9:00–18:00)

Sydney to Ko Samui conversion table

Every hour of today in Sydney and the matching time in Ko Samui. Light rows are typical working hours (9:00–18:00).

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

Best time to call or meet

Both sides are at work from 1:00 PM – 6:00 PM in Sydney (9:00 AM – 2:00 PM in Ko Samui).

Daylight saving time and the difference

The difference changes during the year because Sydney and Ko Samui switch clocks on different dates:

  • Oct 18, 2026 – Apr 4, 2027: -4h
  • Apr 4, 2027 – Oct 3, 2027: -3h
  • Oct 3, 2027 – Oct 18, 2027: -4h

Distance

Sydney and Ko Samui are 7,246 km (4,502 miles) apart in a straight line.

More conversions

Ko Samui to SydneySydney to New YorkSydney to LondonSydney to Los AngelesSydney to ChicagoSydney to TorontoSydney to São PauloSydney to ParisSydney to BerlinSydney to MoscowSydney to DubaiSydney to New DelhiSydney to Bangkok
New York to Ko SamuiLondon to Ko SamuiLos Angeles to Ko SamuiChicago to Ko SamuiToronto to Ko SamuiSão Paulo to Ko SamuiParis to Ko SamuiBerlin to Ko SamuiMoscow to Ko SamuiDubai to Ko SamuiNew Delhi to Ko SamuiBangkok to Ko Samui

Questions and answers

What is the time difference between Sydney and Ko Samui?

Ko Samui is 4 hours behind Sydney.

What time is it in Ko Samui when it is 9 AM in Sydney?

When it is 9:00 AM in Sydney, it is 5:00 AM in Ko Samui.

When is the best time to call Ko Samui from Sydney?

Both sides are at work from 1:00 PM – 6:00 PM in Sydney (9:00 AM – 2:00 PM in Ko Samui).

Does the time difference between Sydney and Ko Samui change?

Yes, for part of the year, because daylight saving time starts and ends on different dates or applies on one side only.