Offset
The time difference between Zürich and Surabaya is 5 hours.
Zürich (CEST) is behind Surabaya (WIB).
CEST: UTC+2
WIB: UTC+7
Zürich is currently observing daylight saving time; Surabaya is not.
When to schedule
Business-hours overlap: 9 AM–12 PM in Zürich (2 PM–5 PM in Surabaya).
Both teams are in working hours during this window on weekdays.
Suggested time: 10:00 AM Zürich (3:00 PM Surabaya).
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.
Switzerland
- New Year's DayThu, Jan 1
- Ascension DayThu, May 14
- Swiss National DaySat, Aug 1
- Christmas DayFri, Dec 25
Indonesia
- New Year's DayThu, Jan 1
- Good FridayFri, Apr 3
- Easter SundaySun, Apr 5
- Labour DayFri, May 1
- Ascension DayThu, May 14
- Pancasila DayMon, Jun 1
- Independence DayMon, Aug 17
- Christmas DayFri, Dec 25
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Zürich | Surabaya | Day |
|---|---|---|
| 12:00 am | 5:00 am | Same day |
| 1:00 am | 6:00 am | Same day |
| 2:00 am | 7:00 am | Same day |
| 3:00 am | 8:00 am | Same day |
| 4:00 am | 9:00 am | Same day |
| 5:00 am | 10:00 am | Same day |
| 6:00 am | 11:00 am | Same day |
| 7:00 am | 12:00 pm | Same day |
| 8:00 am | 1:00 pm | Same day |
| 9:00 am | 2:00 pm | Same day |
| 10:00 am | 3:00 pm | Same day |
| 11:00 am | 4:00 pm | Same day |
| 12:00 pm | 5:00 pm | Same day |
| 1:00 pm | 6:00 pm | Same day |
| 2:00 pm | 7:00 pm | Same day |
| 3:00 pm | 8:00 pm | Same day |
| 4:00 pm | 9:00 pm | Same day |
| 5:00 pm | 10:00 pm | Same day |
| 6:00 pm | 11:00 pm | Same day |
| 7:00 pm | 12:00 am | +1 day |
| 8:00 pm | 1:00 am | +1 day |
| 9:00 pm | 2:00 am | +1 day |
| 10:00 pm | 3:00 am | +1 day |
| 11:00 pm | 4:00 am | +1 day |
Daylight saving time
Zürich observes daylight saving time; Surabaya does not. The offset between the two zones changes when Zürich transitions: on Sunday, October 25, 2026, clocks fall back from CEST to CET.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 5:31 AM
- Sunset
- 9:21 PM
- Day length
- 15h 50m
- Sunrise
- 5:37 AM
- Sunset
- 5:20 PM
- Day length
- 11h 43m
Daylight overlap: 6h 49m — 5:31 AM–12:20 PM in Zürich (10:31 AM–5:20 PM in Surabaya). Both locations are in daylight during this window.
Cities in these zones
Other cities in Western Indonesia Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Central European Time
- ZRH
- BRN
Airports in Western Indonesia Time
- CGK
- HLP
- SUB
- BDO
- KNO
- PLM
- SRG
Related conversions
Common conversions
- What is 9:00 am Zürich in Surabaya?
- 9:00 am Zürich is 2:00 pm Surabaya.
- What is 12:00 pm Zürich in Surabaya?
- 12:00 pm Zürich is 5:00 pm Surabaya.
- What is 12:30 pm Zürich in Surabaya?
- 12:30 pm Zürich is 5:30 pm Surabaya.
- What is 2:00 pm Zürich in Surabaya?
- 2:00 pm Zürich is 7:00 pm Surabaya.
- What is 5:00 pm Zürich in Surabaya?
- 5:00 pm Zürich is 10:00 pm Surabaya.
- What is 11:30 pm Zürich in Surabaya?
- 11:30 pm Zürich is 4:30 am Surabaya, the next day.