Time Difference

Surabaya vs Sydney Time Difference

Compare the current local time in Surabaya, Indonesia and Sydney, Australia.

Live local timeDST awareUTC offsets

From

Surabaya

Indonesia

8:42 AM

Sun, Nov 1

UTC+7Asia/Jakarta

Difference

4 hours

Swap

Sydney

Australia

12:42 PM

Sun, Nov 1

UTC+11Australia/Sydney

Current difference

Sydney is currently 3 hours 60 minutes ahead of Surabaya.

This difference is calculated using the current UTC offsets for both locations and automatically reflects daylight-saving changes.

24-hour comparison

Compare Surabaya and Sydney hour by hour

See how a full local day in Surabaya, Indonesia maps to Sydney, Australia. TimeInOne automatically accounts for timezone offsets, date changes and daylight-saving transitions.

24-hour day

Best working-hours overlap

9:00 AM – 2:00 PM in Surabaya

corresponds to 1:00 PM – 6:00 PM in Sydney.

5 hours overlap

Surabaya

Asia/Jakarta

Sydney

Australia/Sydney

Availability

12:00 AM

Sun, Nov 1

4:00 AM

Sun, Nov 1

Night

1:00 AM

Sun, Nov 1

5:00 AM

Sun, Nov 1

Night

2:00 AM

Sun, Nov 1

6:00 AM

Sun, Nov 1

Night

3:00 AM

Sun, Nov 1

7:00 AM

Sun, Nov 1

Night

4:00 AM

Sun, Nov 1

8:00 AM

Sun, Nov 1

Night

5:00 AM

Sun, Nov 1

9:00 AM

Sun, Nov 1

Night

6:00 AM

Sun, Nov 1

10:00 AM

Sun, Nov 1

Night

7:00 AM

Sun, Nov 1

11:00 AM

Sun, Nov 1

Possible

8:00 AM

Sun, Nov 1

12:00 PM

Sun, Nov 1

Possible

9:00 AM

Sun, Nov 1

1:00 PM

Sun, Nov 1

Good overlap

10:00 AM

Sun, Nov 1

2:00 PM

Sun, Nov 1

Good overlap

11:00 AM

Sun, Nov 1

3:00 PM

Sun, Nov 1

Good overlap

12:00 PM

Sun, Nov 1

4:00 PM

Sun, Nov 1

Good overlap

1:00 PM

Sun, Nov 1

5:00 PM

Sun, Nov 1

Good overlap

2:00 PM

Sun, Nov 1

6:00 PM

Sun, Nov 1

Possible

3:00 PM

Sun, Nov 1

7:00 PM

Sun, Nov 1

Possible

4:00 PM

Sun, Nov 1

8:00 PM

Sun, Nov 1

Possible

5:00 PM

Sun, Nov 1

9:00 PM

Sun, Nov 1

Night

6:00 PM

Sun, Nov 1

10:00 PM

Sun, Nov 1

Night

7:00 PM

Sun, Nov 1

11:00 PM

Sun, Nov 1

Night

8:00 PM

Sun, Nov 1

12:00 AM

Next day

Mon, Nov 2

Night

9:00 PM

Sun, Nov 1

1:00 AM

Next day

Mon, Nov 2

Night

10:00 PM

Sun, Nov 1

2:00 AM

Next day

Mon, Nov 2

Night

11:00 PM

Sun, Nov 1

3:00 AM

Next day

Mon, Nov 2

Night

Working-hour labels use a general 9:00 AM–6:00 PM schedule. Individual schedules may differ.

On daylight-saving transition dates, a local day can contain 23 or 25 real hours instead of 24.

Call planning

Best time to call Sydney from Surabaya

Compare typical business hours in Surabaya, Indonesia and Sydney, Australia to find a practical time for calls, meetings or international coordination.

Surabaya

9:42 AM – 2:42 PM

Indonesia

Best overlap

Sydney

1:42 PM – 6:42 PM

Australia

The best time to call Sydney from Surabaya is between 9:42 AM and 2:42 PM in Surabaya. This corresponds to 1:42 PM – 6:42 PM in Sydney.

Other reasonable windows

Surabaya

8:42 AM – 9:42 AM

Sydney

12:42 PM – 1:42 PM

Surabaya

2:42 PM – 5:42 PM

Sydney

6:42 PM – 9:42 PM

Recommendations use typical 9:00 AM–6:00 PM business hours and a broader 7:00 AM–9:00 PM acceptable calling window. Individual schedules may differ.

Time difference explained

Surabaya and Sydney time difference explained

Current local-time relationship

Sydney is currently 4 hours ahead of Surabaya.

Surabaya uses Asia/Jakarta and currently has an offset of UTC+7. Sydney uses Australia/Sydney and currently has an offset of UTC+11.

Working-hours overlap

For a typical 9:00 AM–6:00 PM workday, the cities overlap from 9:00 AM to 2:00 PM in Surabaya, corresponding to 1:00 PM–6:00 PM in Sydney.

Because UTC offsets can change during the year, always check the selected date when planning an important international call or meeting.

Convert a specific time

Need more than the current difference?

Convert a specific date and local time between Surabaya and Sydney.

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Local clocks

Explore each city

Current time in Surabaya Current time in Sydney

FAQ

Surabaya to Sydney time difference FAQ

Common questions about the current time difference, UTC offsets, daylight-saving changes and practical calling hours between Surabaya and Sydney.

What is the time difference between Surabaya and Sydney?

The current time difference between Surabaya and Sydney is 4 hours. Sydney is currently 4 hours ahead of Surabaya.

Is Sydney ahead of or behind Surabaya?

Sydney is currently 4 hours ahead of Surabaya.

What time is it in Sydney when it is 9:00 AM in Surabaya?

Using the current UTC offsets, 9:00 AM in Surabaya corresponds to 1:00 PM in Sydney. The exact difference can change when daylight-saving rules change.

What is the best time to call Sydney from Surabaya?

Typical 9:00 AM–6:00 PM business hours overlap between 9:00 AM and 2:00 PM in Surabaya. This corresponds to 1:00 PM–6:00 PM in Sydney.

Can the time difference between Surabaya and Sydney change?

Yes. The time difference can change if Surabaya or Sydney changes its UTC offset because of daylight-saving or other local time-zone rules. TimeInOne uses the IANA zones Asia/Jakarta and Australia/Sydney for date-aware calculations.