Time Difference

Singapore vs Surabaya Time Difference

Compare the current local time in Singapore, Singapore and Surabaya, Indonesia.

Live local timeDST awareUTC offsets

From

Singapore

1:12 PM

Mon, Aug 17

UTC+8Asia/Singapore

Difference

1 hour

Swap

Surabaya

Indonesia

12:12 PM

Mon, Aug 17

UTC+7Asia/Jakarta

Current difference

Surabaya is currently 1 hour behind Singapore.

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

24-hour comparison

Compare Singapore and Surabaya hour by hour

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

24-hour day

Best working-hours overlap

10:00 AM – 6:00 PM in Singapore

corresponds to 9:00 AM – 5:00 PM in Surabaya.

8 hours overlap

Singapore

Asia/Singapore

Surabaya

Asia/Jakarta

Availability

12:00 AM

Mon, Aug 17

11:00 PM

Previous day

Sun, Aug 16

Night

1:00 AM

Mon, Aug 17

12:00 AM

Mon, Aug 17

Night

2:00 AM

Mon, Aug 17

1:00 AM

Mon, Aug 17

Night

3:00 AM

Mon, Aug 17

2:00 AM

Mon, Aug 17

Night

4:00 AM

Mon, Aug 17

3:00 AM

Mon, Aug 17

Night

5:00 AM

Mon, Aug 17

4:00 AM

Mon, Aug 17

Night

6:00 AM

Mon, Aug 17

5:00 AM

Mon, Aug 17

Night

7:00 AM

Mon, Aug 17

6:00 AM

Mon, Aug 17

Night

8:00 AM

Mon, Aug 17

7:00 AM

Mon, Aug 17

Possible

9:00 AM

Mon, Aug 17

8:00 AM

Mon, Aug 17

Possible

10:00 AM

Mon, Aug 17

9:00 AM

Mon, Aug 17

Good overlap

11:00 AM

Mon, Aug 17

10:00 AM

Mon, Aug 17

Good overlap

12:00 PM

Mon, Aug 17

11:00 AM

Mon, Aug 17

Good overlap

1:00 PM

Mon, Aug 17

12:00 PM

Mon, Aug 17

Good overlap

2:00 PM

Mon, Aug 17

1:00 PM

Mon, Aug 17

Good overlap

3:00 PM

Mon, Aug 17

2:00 PM

Mon, Aug 17

Good overlap

4:00 PM

Mon, Aug 17

3:00 PM

Mon, Aug 17

Good overlap

5:00 PM

Mon, Aug 17

4:00 PM

Mon, Aug 17

Good overlap

6:00 PM

Mon, Aug 17

5:00 PM

Mon, Aug 17

Possible

7:00 PM

Mon, Aug 17

6:00 PM

Mon, Aug 17

Possible

8:00 PM

Mon, Aug 17

7:00 PM

Mon, Aug 17

Possible

9:00 PM

Mon, Aug 17

8:00 PM

Mon, Aug 17

Night

10:00 PM

Mon, Aug 17

9:00 PM

Mon, Aug 17

Night

11:00 PM

Mon, Aug 17

10:00 PM

Mon, Aug 17

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 Surabaya from Singapore

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

Singapore

1:12 PM – 6:12 PM

Singapore

Best overlap

Surabaya

12:12 PM – 5:12 PM

Indonesia

The best time to call Surabaya from Singapore is between 1:12 PM and 6:12 PM in Singapore. This corresponds to 12:12 PM – 5:12 PM in Surabaya.

Other reasonable windows

Singapore

6:12 PM – 9:12 PM

Surabaya

5:12 PM – 8:12 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

Singapore and Surabaya time difference explained

Current local-time relationship

Surabaya is currently 1 hour behind Singapore.

Singapore uses Asia/Singapore and currently has an offset of UTC+8. Surabaya uses Asia/Jakarta and currently has an offset of UTC+7.

Working-hours overlap

For a typical 9:00 AM–6:00 PM workday, the cities overlap from 10:00 AM to 6:00 PM in Singapore, corresponding to 9:00 AM–5:00 PM in Surabaya.

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 Singapore and Surabaya.

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Local clocks

Explore each city

Current time in Singapore Current time in Surabaya

FAQ

Singapore to Surabaya time difference FAQ

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

What is the time difference between Singapore and Surabaya?

The current time difference between Singapore and Surabaya is 1 hour. Surabaya is currently 1 hour behind Singapore.

Is Surabaya ahead of or behind Singapore?

Surabaya is currently 1 hour behind Singapore.

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

Using the current UTC offsets, 9:00 AM in Singapore corresponds to 8:00 AM in Surabaya. The exact difference can change when daylight-saving rules change.

What is the best time to call Surabaya from Singapore?

Typical 9:00 AM–6:00 PM business hours overlap between 10:00 AM and 6:00 PM in Singapore. This corresponds to 9:00 AM–5:00 PM in Surabaya.

Can the time difference between Singapore and Surabaya change?

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