CET to Rio de Janeiro time conversion
Rio de Janeiro is 4 hours behind CET.
CET is always UTC+1. Right now most places that use CET are on CEST (UTC+2): Rio de Janeiro is 5 hours behind CEST.
Time difference with your location
CET is 1 hour ahead of UTC. Compare with your local time →
Choose a date and time
Choose the local time in CET to convert it to Rio de Janeiro on that date.
Skipped clock-change times are unavailable; a repeated time uses its first occurrence.
24-hour conversion chart · CET → Rio de Janeiro
This table converts each hour in CET to Rio de Janeiro on 2026-10-21.
- Working hours
- Outside working hours
- Night hours
| CET | Rio de Janeiro | Shared working hours |
|---|---|---|
| 00:0012:00 AM | 20:008:00 PM -1 day | |
| 01:001:00 AM | 21:009:00 PM -1 day | |
| 02:002:00 AM | 22:0010:00 PM -1 day | |
| 03:003:00 AM | 23:0011:00 PM -1 day | |
| 04:004:00 AM | 00:0012:00 AM | |
| 05:005:00 AM | 01:001:00 AM | |
| 06:006:00 AM | 02:002:00 AM | |
| 07:007:00 AM | 03:003:00 AM | |
| 08:008:00 AM | 04:004:00 AM | |
| 09:009:00 AM | 05:005:00 AM | |
| 10:0010:00 AM | 06:006:00 AM | |
| 11:0011:00 AM | 07:007:00 AM | |
| 12:0012:00 PM | 08:008:00 AM | ✓ |
| 13:001:00 PM | 09:009:00 AM | ✓ |
| 14:002:00 PM | 10:0010:00 AM | ✓ |
| 15:003:00 PM | 11:0011:00 AM | ✓ |
| 16:004:00 PM | 12:0012:00 PM | ✓ |
| 17:005:00 PM | 13:001:00 PM | ✓ |
| 18:006:00 PM | 14:002:00 PM | |
| 19:007:00 PM | 15:003:00 PM | |
| 20:008:00 PM | 16:004:00 PM | |
| 21:009:00 PM | 17:005:00 PM | |
| 22:0010:00 PM | 18:006:00 PM | |
| 23:0011:00 PM | 19:007:00 PM |
Quick conversion examples
These examples use CET (UTC+1) and Rio de Janeiro (UTC-3); choosing a date applies the local clock changes.
Conversion formula: Rio de Janeiro = CET − 4h · CEST − 5h.
| CET | Rio de Janeiro |
|---|---|
| 6:00 AM CET | = 2:00 AM Rio de Janeiro |
| 7:00 AM CET | = 3:00 AM Rio de Janeiro |
| 8:00 AM CET | = 4:00 AM Rio de Janeiro |
| 9:00 AM CET | = 5:00 AM Rio de Janeiro |
| 10:00 AM CET | = 6:00 AM Rio de Janeiro |
| 12:00 PM CET | = 8:00 AM Rio de Janeiro |
| 3:00 PM CET | = 11:00 AM Rio de Janeiro |
| 5:00 PM CET | = 1:00 PM Rio de Janeiro |
| 6:00 PM CET | = 2:00 PM Rio de Janeiro |
| 8:00 PM CET | = 4:00 PM Rio de Janeiro |
Overlapping meeting hours
The 08:00–18:00 working day in CET and Rio de Janeiro overlaps for 6 hours on 2026-10-21.
- Shared working hours
- 12:00–18:00 CET · 08:00–14:00 Rio de Janeiro
Clock changes on both sides, 2026–2028
CET and Rio de Janeiro have the following local clock changes in 2026–2028; all times in the table are local to that side.
| Year | CET | Rio de Janeiro |
|---|---|---|
| 2026 | · 02:00 → 03:00 · 03:00 → 02:00 | No clock changes; UTC-3 all year. |
| 2027 | · 02:00 → 03:00 · 03:00 → 02:00 | No clock changes; UTC-3 all year. |
| 2028 | · 02:00 → 03:00 · 03:00 → 02:00 | No clock changes; UTC-3 all year. |
At the start of 2026, Rio de Janeiro is 4 hours behind CET. The difference changes during the following periods.
- From 2026-03-29 03:00 CEST until 2026-10-25 02:00 CET, Rio de Janeiro is 5 hours behind CEST.
- From 2027-03-28 03:00 CEST until 2027-10-31 02:00 CET, Rio de Janeiro is 5 hours behind CEST.
- From 2028-03-26 03:00 CEST until 2028-10-29 02:00 CET, Rio de Janeiro is 5 hours behind CEST.
Frequently asked questions
What time is 9 AM CET in Rio de Janeiro?
9:00 AM CET = 5:00 AM Rio de Janeiro, using UTC+1 and UTC-3. Choose a date above for the seasonal local time.
Does the time difference between CET and Rio de Janeiro change during the year?
Yes. During 2026–2028: Rio de Janeiro is 5 hours behind CET; Rio de Janeiro is 4 hours behind CET. The clock-change table gives the dates for both sides.
How do I tell whether it is day or night in Rio de Janeiro?
Read the Rio de Janeiro clock above: this guide counts 06:00–18:00 local time as daytime and the rest as nighttime, without using sunrise and sunset.
What is the best time to call between CET and Rio de Janeiro?
The shared 08:00–18:00 working window is 12:00–18:00 CET / 08:00–14:00 Rio de Janeiro, a total of 6 hours.
What is the time difference between CET and Rio de Janeiro now?
Right now, Rio de Janeiro is 4 hours behind CET. Conversion formula: Rio de Janeiro = CET − 4h · CEST − 5h.