Offset
The time difference between Colombo and Sydney is 4.5 hours.
Colombo (IST) is behind Sydney (AEST).
IST: UTC+5:30
AEST: UTC+10
Neither Colombo nor Sydney is currently observing daylight saving time.
When to schedule
Business-hours overlap: 9 AM–1 PM in Colombo (1 PM–5 PM in Sydney).
Both teams are in working hours during this window on weekdays.
Suggested time: 11:00 AM Colombo (3:30 PM Sydney).
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Australia
- New Year's DayThu, Jan 1
- Australia DayMon, Jan 26
- Good FridayFri, Apr 3
- Easter MondayMon, Apr 6
- Christmas DayFri, Dec 25
- St. Stephen's DayMon, Dec 28
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Colombo | Sydney | Day |
|---|---|---|
| 12:00 am | 4:30 am | Same day |
| 1:00 am | 5:30 am | Same day |
| 2:00 am | 6:30 am | Same day |
| 3:00 am | 7:30 am | Same day |
| 4:00 am | 8:30 am | Same day |
| 5:00 am | 9:30 am | Same day |
| 6:00 am | 10:30 am | Same day |
| 7:00 am | 11:30 am | Same day |
| 8:00 am | 12:30 pm | Same day |
| 9:00 am | 1:30 pm | Same day |
| 10:00 am | 2:30 pm | Same day |
| 11:00 am | 3:30 pm | Same day |
| 12:00 pm | 4:30 pm | Same day |
| 1:00 pm | 5:30 pm | Same day |
| 2:00 pm | 6:30 pm | Same day |
| 3:00 pm | 7:30 pm | Same day |
| 4:00 pm | 8:30 pm | Same day |
| 5:00 pm | 9:30 pm | Same day |
| 6:00 pm | 10:30 pm | Same day |
| 7:00 pm | 11:30 pm | Same day |
| 8:00 pm | 12:30 am | +1 day |
| 9:00 pm | 1:30 am | +1 day |
| 10:00 pm | 2:30 am | +1 day |
| 11:00 pm | 3:30 am | +1 day |
Daylight saving time
Sydney observes daylight saving time; Colombo does not. The offset between the two zones changes when Sydney transitions: on Sunday, October 4, 2026, clocks spring forward from AEST to AEDT.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:55 AM
- Sunset
- 6:26 PM
- Day length
- 12h 31m
- Sunrise
- 6:56 AM
- Sunset
- 4:54 PM
- Day length
- 9h 58m
Daylight overlap: 6h 29m — 5:55 AM–12:24 PM in Colombo (10:25 AM–4:54 PM in Sydney). Both locations are in daylight during this window.
Cities in these zones
Other cities in Australian Eastern Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in India Standard Time
- CMB
- RML
Airports in Australian Eastern Time
- SYD
- CBR
Related conversions
Common conversions
- What is 9:00 am Colombo in Sydney?
- 9:00 am Colombo is 1:30 pm Sydney.
- What is 12:00 pm Colombo in Sydney?
- 12:00 pm Colombo is 4:30 pm Sydney.
- What is 12:30 pm Colombo in Sydney?
- 12:30 pm Colombo is 5:00 pm Sydney.
- What is 2:00 pm Colombo in Sydney?
- 2:00 pm Colombo is 6:30 pm Sydney.
- What is 5:00 pm Colombo in Sydney?
- 5:00 pm Colombo is 9:30 pm Sydney.
- What is 11:30 pm Colombo in Sydney?
- 11:30 pm Colombo is 4:00 am Sydney, the next day.