Time difference
Singapore to Surabaya Time Difference
Surabaya is 1 hour behind Singapore — when it's 12:00 PM in Singapore, it's 11:00 AM in Surabaya. (Singapore (Asia/Singapore, GMT+8); Surabaya (Asia/Jakarta, WIB).) Below: live local times, the best hours for a call, a full conversion table, and exact daylight-saving dates.
Surabaya is 1 hour behind Singapore. The best window for a call is 10 AM–5 PM in Singapore, which is 9 AM–4 PM in Surabaya — a 7-hour overlap inside 9 AM–5 PM on both sides. Singapore and Surabaya change their clocks together (or don't change at all), so the time difference between them stays the same all year.
- When it's 9:00 AM in Singapore, it's 8:00 AM in Surabaya.
- When it's 9:00 AM in Surabaya, it's 10:00 AM in Singapore.
Surabaya is currently 1 hour behind Singapore.
Interactive converter
12:00PM
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Best times to meet
The 9 AM – 5 PM business windows in Singapore and Surabaya overlap for 7 hours. 10 AM–5 PM in Singapore is 9 AM–4 PM in Surabaya. Aim somewhere in the middle of that window so neither side starts cold or finishes drained.
Quick conversion table
| Singapore | Surabaya |
|---|---|
| 12 AM | 11:00 PM (prev day) |
| 1 AM | 12:00 AM |
| 2 AM | 1:00 AM |
| 3 AM | 2:00 AM |
| 4 AM | 3:00 AM |
| 5 AM | 4:00 AM |
| 6 AM | 5:00 AM |
| 7 AM | 6:00 AM |
| 8 AM | 7:00 AM |
| 9 AM | 8:00 AM |
| 10 AM | 9:00 AM |
| 11 AM | 10:00 AM |
| 12 PM | 11:00 AM |
| 1 PM | 12:00 PM |
| 2 PM | 1:00 PM |
| 3 PM | 2:00 PM |
| 4 PM | 3:00 PM |
| 5 PM | 4:00 PM |
| 6 PM | 5:00 PM |
| 7 PM | 6:00 PM |
| 8 PM | 7:00 PM |
| 9 PM | 8:00 PM |
| 10 PM | 9:00 PM |
| 11 PM | 10:00 PM |
Daylight saving
The time difference between these two cities stays the same over the next twelve months — neither zone is changing for daylight saving in that window.
- Singapore does not observe daylight saving time.
- Surabaya does not observe daylight saving time.
Frequently asked questions
- Is Surabaya ahead of or behind Singapore?
- Surabaya is 1 hour behind Singapore.
- How many hours behind Singapore is Surabaya?
- Surabaya is 1 hour behind Singapore.
- What time is 9 AM in Singapore in Surabaya?
- 9:00 AM in Singapore is 8:00 AM in Surabaya.
- What time is noon in Singapore in Surabaya?
- 12:00 PM in Singapore is 11:00 AM in Surabaya.
- What time is 5 PM in Singapore in Surabaya?
- 5:00 PM in Singapore is 4:00 PM in Surabaya. Useful for end-of-day handoffs between the two offices.
- What time is 3 PM in Singapore in Surabaya?
- 3:00 PM in Singapore is 2:00 PM in Surabaya.
- Is Singapore currently observing daylight saving time?
- Singapore does not observe daylight saving time — its UTC offset stays the same all year.
- Is Surabaya currently observing daylight saving time?
- Surabaya does not observe daylight saving time — its UTC offset stays the same all year.
- Do Singapore and Surabaya observe daylight saving?
- The time difference between these two cities stays the same over the next twelve months — neither zone is changing for daylight saving in that window.
- When is the best time to call Surabaya from Singapore?
- Aim for 10 AM–5 PM in Singapore, which is 9 AM–4 PM in Surabaya.
- When is the best time to call Singapore from Surabaya?
- Aim for 9 AM–4 PM in Surabaya, which is 10 AM–5 PM in Singapore.
- Singapore (GMT+8) to Surabaya (WIB) — how do I convert quickly?
- Subtract 1 hour from Singapore local time to get Surabaya local time. Or use the converter at the top of this page — it stays accurate through daylight-saving changes automatically.
Other conversions
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