World Timezones

Chennai to Sydney Converter

Compare Sydney to Chennai instead
Chennai9:05 amMon, Jun 8
ChennaiIST
India · UTC+5:30
9:05 amMon, Jun 8
12a
1a
2a
3a
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
SydneyAEST
Australia · UTC+10
1:35 pmMon, Jun 8
4a
5a
6a
7a
8a
9a
10a
11a
12p
1p
2p
3p
4p
5p
6p
7p
8p
9p
10p
11p
12a
1a
2a
3a

Offset

The time difference between Chennai and Sydney is 4.5 hours.

4.5 hours

Chennai (IST) is behind Sydney (AEST).

IST: UTC+5:30

AEST: UTC+10

Neither Chennai nor Sydney is currently observing daylight saving time.

When to schedule

Business-hours overlap: 9 AM–1 PM in Chennai (1 PM–5 PM in Sydney).

Both teams are in working hours during this window on weekdays.

Suggested time: 11:00 AM Chennai (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

Chennai uses India Standard Time (IST). To call India, dial +91.

Sydney uses Australian Eastern Time (AEST, or AEDT). To call Australia, dial +61.

Sydney is approximately 5,650 miles southeast of Chennai.

Quick reference

Full 24-hour conversion table — tap any time to open it in the converter.

ChennaiSydneyDay
12:00 am4:30 amSame day
1:00 am5:30 amSame day
2:00 am6:30 amSame day
3:00 am7:30 amSame day
4:00 am8:30 amSame day
5:00 am9:30 amSame day
6:00 am10:30 amSame day
7:00 am11:30 amSame day
8:00 am12:30 pmSame day
9:00 am1:30 pmSame day
10:00 am2:30 pmSame day
11:00 am3:30 pmSame day
12:00 pm4:30 pmSame day
1:00 pm5:30 pmSame day
2:00 pm6:30 pmSame day
3:00 pm7:30 pmSame day
4:00 pm8:30 pmSame day
5:00 pm9:30 pmSame day
6:00 pm10:30 pmSame day
7:00 pm11:30 pmSame day
8:00 pm12:30 am+1 day
9:00 pm1:30 am+1 day
10:00 pm2:30 am+1 day
11:00 pm3:30 am+1 day

Daylight saving time

Sydney observes daylight saving time; Chennai 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

Chennai
Sunrise
5:43 AM
Sunset
6:35 PM
Day length
12h 52m
Sydney
Sunrise
6:56 AM
Sunset
4:54 PM
Day length
9h 58m

Daylight overlap: 6h 41m — 5:43 AM–12:24 PM in Chennai (10:13 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

  • BOM
  • NMI
  • DEL
  • BLR
  • HYD
  • AMD
  • MAA
  • CCU
  • STV
  • PNQ

Airports in Australian Eastern Time

  • SYD
  • CBR

Related conversions

Common conversions

What is 9:00 am Chennai in Sydney?
9:00 am Chennai is 1:30 pm Sydney.
What is 12:00 pm Chennai in Sydney?
12:00 pm Chennai is 4:30 pm Sydney.
What is 12:30 pm Chennai in Sydney?
12:30 pm Chennai is 5:00 pm Sydney.
What is 2:00 pm Chennai in Sydney?
2:00 pm Chennai is 6:30 pm Sydney.
What is 5:00 pm Chennai in Sydney?
5:00 pm Chennai is 9:30 pm Sydney.
What is 11:30 pm Chennai in Sydney?
11:30 pm Chennai is 4:00 am Sydney, the next day.