Time Difference

Surabaya vs Tianjin Time Difference

Compare the current local time in Surabaya, Indonesia and Tianjin, China.

Live local timeDST awareUTC offsets

From

Surabaya

Indonesia

6:40 AM

Mon, Aug 17

UTC+7Asia/Jakarta

Difference

1 hour

Swap

Tianjin

China

7:40 AM

Mon, Aug 17

UTC+8Asia/Shanghai

Current difference

Tianjin is currently 1 hour 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 Tianjin hour by hour

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

24-hour day

Best working-hours overlap

9:00 AM – 5:00 PM in Surabaya

corresponds to 10:00 AM – 6:00 PM in Tianjin.

8 hours overlap

Surabaya

Asia/Jakarta

Tianjin

Asia/Shanghai

Availability

12:00 AM

Mon, Aug 17

1:00 AM

Mon, Aug 17

Night

1:00 AM

Mon, Aug 17

2:00 AM

Mon, Aug 17

Night

2:00 AM

Mon, Aug 17

3:00 AM

Mon, Aug 17

Night

3:00 AM

Mon, Aug 17

4:00 AM

Mon, Aug 17

Night

4:00 AM

Mon, Aug 17

5:00 AM

Mon, Aug 17

Night

5:00 AM

Mon, Aug 17

6:00 AM

Mon, Aug 17

Night

6:00 AM

Mon, Aug 17

7:00 AM

Mon, Aug 17

Night

7:00 AM

Mon, Aug 17

8:00 AM

Mon, Aug 17

Possible

8:00 AM

Mon, Aug 17

9:00 AM

Mon, Aug 17

Possible

9:00 AM

Mon, Aug 17

10:00 AM

Mon, Aug 17

Good overlap

10:00 AM

Mon, Aug 17

11:00 AM

Mon, Aug 17

Good overlap

11:00 AM

Mon, Aug 17

12:00 PM

Mon, Aug 17

Good overlap

12:00 PM

Mon, Aug 17

1:00 PM

Mon, Aug 17

Good overlap

1:00 PM

Mon, Aug 17

2:00 PM

Mon, Aug 17

Good overlap

2:00 PM

Mon, Aug 17

3:00 PM

Mon, Aug 17

Good overlap

3:00 PM

Mon, Aug 17

4:00 PM

Mon, Aug 17

Good overlap

4:00 PM

Mon, Aug 17

5:00 PM

Mon, Aug 17

Good overlap

5:00 PM

Mon, Aug 17

6:00 PM

Mon, Aug 17

Possible

6:00 PM

Mon, Aug 17

7:00 PM

Mon, Aug 17

Possible

7:00 PM

Mon, Aug 17

8:00 PM

Mon, Aug 17

Possible

8:00 PM

Mon, Aug 17

9:00 PM

Mon, Aug 17

Night

9:00 PM

Mon, Aug 17

10:00 PM

Mon, Aug 17

Night

10:00 PM

Mon, Aug 17

11:00 PM

Mon, Aug 17

Night

11:00 PM

Mon, Aug 17

12:00 AM

Next day

Tue, Aug 18

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 Tianjin from Surabaya

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

Surabaya

9:40 AM – 5:40 PM

Indonesia

Best overlap

Tianjin

10:40 AM – 6:40 PM

China

The best time to call Tianjin from Surabaya is between 9:40 AM and 5:40 PM in Surabaya. This corresponds to 10:40 AM – 6:40 PM in Tianjin.

Other reasonable windows

Surabaya

7:40 AM – 9:40 AM

Tianjin

8:40 AM – 10:40 AM

Surabaya

5:40 PM – 8:40 PM

Tianjin

6:40 PM – 9:40 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 Tianjin time difference explained

Current local-time relationship

Tianjin is currently 1 hour ahead of Surabaya.

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

Working-hours overlap

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

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 Tianjin.

Open time converter

Local clocks

Explore each city

Current time in Surabaya Current time in Tianjin

FAQ

Surabaya to Tianjin time difference FAQ

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

What is the time difference between Surabaya and Tianjin?

The current time difference between Surabaya and Tianjin is 1 hour. Tianjin is currently 1 hour ahead of Surabaya.

Is Tianjin ahead of or behind Surabaya?

Tianjin is currently 1 hour ahead of Surabaya.

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

Using the current UTC offsets, 9:00 AM in Surabaya corresponds to 10:00 AM in Tianjin. The exact difference can change when daylight-saving rules change.

What is the best time to call Tianjin from Surabaya?

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

Can the time difference between Surabaya and Tianjin change?

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