Offset
The time difference between Mumbai and Rotterdam is 4.5 hours.
Mumbai (IST) is ahead of Rotterdam (CET).
IST: UTC+5:30
CET: UTC+1
Neither Mumbai nor Rotterdam is currently observing daylight saving time.
When to schedule
Business-hours overlap: 1 PM–5 PM in Mumbai (9 AM–1 PM in Rotterdam).
Both teams are in working hours during this window on weekdays.
Suggested time: 3:00 PM Mumbai (11:30 AM Rotterdam).
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.
The Netherlands
- New Year's DayThu, Jan 1
- Good FridayFri, Apr 3
- Easter SundaySun, Apr 5
- Easter MondayMon, Apr 6
- King's DayMon, Apr 27
- Liberation DayTue, May 5
- Ascension DayThu, May 14
- PentecostSun, May 24
- Whit MondayMon, May 25
- Christmas DayFri, Dec 25
- St. Stephen's DaySat, Dec 26
About these zones
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| Mumbai | Rotterdam | Day |
|---|---|---|
| 12:00 am | 8:30 pm | -1 day |
| 1:00 am | 9:30 pm | -1 day |
| 2:00 am | 10:30 pm | -1 day |
| 3:00 am | 11:30 pm | -1 day |
| 4:00 am | 12:30 am | Same day |
| 5:00 am | 1:30 am | Same day |
| 6:00 am | 2:30 am | Same day |
| 7:00 am | 2:30 am | Same day |
| 8:00 am | 3:30 am | Same day |
| 9:00 am | 4:30 am | Same day |
| 10:00 am | 5:30 am | Same day |
| 11:00 am | 6:30 am | Same day |
| 12:00 pm | 7:30 am | Same day |
| 1:00 pm | 8:30 am | Same day |
| 2:00 pm | 9:30 am | Same day |
| 3:00 pm | 10:30 am | Same day |
| 4:00 pm | 11:30 am | Same day |
| 5:00 pm | 12:30 pm | Same day |
| 6:00 pm | 1:30 pm | Same day |
| 7:00 pm | 2:30 pm | Same day |
| 8:00 pm | 3:30 pm | Same day |
| 9:00 pm | 4:30 pm | Same day |
| 10:00 pm | 5:30 pm | Same day |
| 11:00 pm | 6:30 pm | Same day |
Daylight saving time
Rotterdam observes daylight saving time; Mumbai does not. The offset between the two zones changes when Rotterdam transitions: on Sunday, March 28, 2027, clocks spring forward from CET to CEST.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 6:36 AM
- Sunset
- 6:10 PM
- Day length
- 11h 34m
- Sunrise
- 7:24 AM
- Sunset
- 5:29 PM
- Day length
- 10h 5m
Daylight overlap: 6h 16m — 11:54 AM–6:10 PM in Mumbai (7:24 AM–1:40 PM in Rotterdam). Both locations are in daylight during this window.
Cities in these zones
Other cities in India Standard Time
Other cities in Central European Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in India Standard Time
- BOM
- NMI
- DEL
- BLR
- HYD
- AMD
- MAA
- CCU
- STV
- PNQ
Airports in Central European Time
- AMS
- RTM
Related conversions
Common conversions
- What is 9:00 am Mumbai in Rotterdam?
- 9:00 am Mumbai is 4:30 am Rotterdam.
- What is 12:00 pm Mumbai in Rotterdam?
- 12:00 pm Mumbai is 7:30 am Rotterdam.
- What is 12:30 pm Mumbai in Rotterdam?
- 12:30 pm Mumbai is 8:00 am Rotterdam.
- What is 2:00 pm Mumbai in Rotterdam?
- 2:00 pm Mumbai is 9:30 am Rotterdam.
- What is 5:00 pm Mumbai in Rotterdam?
- 5:00 pm Mumbai is 12:30 pm Rotterdam.
- What is 11:30 pm Mumbai in Rotterdam?
- 11:30 pm Mumbai is 7:00 pm Rotterdam.