Chad time zone history
Daylight saving time was used in 2 years since 1970, last in 1980; under the current rules the clocks no longer change. Ndjamena kept local mean time (UTC+1:00:12) until 1912, the second-latest switch of the 21 zones on UTC+1 standard time.
UTC+1
Standard time is UTC+1 (WAT) all year under the current rules.
Summer time in 2 of 57 years since 1970
Before 1970
Standard time changes
| Date | Change | New standard time | Clock label |
|---|---|---|---|
| Before 1970 | |||
| January 1, 1912 | Local mean time (UTC+1:00:12) replaced | UTC+1 | WAT |
Daylight saving periods
| Years | Clocks go forward | Clocks go back | Shift and labels |
|---|---|---|---|
| 1979 | October 14 | not that year | 1 hour, WAT to WAST |
| 1980 | not that year | March 8 | 1 hour, WAT to WAST |
Also on UTC+1
Nigeria, Malta, Tunisia, Algeria, Albania, Italy, Ceuta (Spain), Gibraltar, Andorra and Madrid (Spain) (nearest first; 10 more on the list of offsets).
Clocks next door since 1970
- Nigeria (1,425 km): same time except 146 days in 1979 and 1980.
- São Tomé and Príncipe (1,600 km): usually 1 hour behind; different on 511 days in 1979, 1980, 2018 and 2019.
- Sudan (1,926 km): usually 1 hour ahead; different on 9,369 days in 1970–1985 and 2000–2017.
- South Sudan (1,992 km): usually 2 hours ahead; different on 10,407 days in 1970–2000 and 2021–2026; 1 hour ahead today.
- Côte d’Ivoire (2,228 km): usually 1 hour behind; different on 146 days in 1979 and 1980.
How it compares
Standard time has stayed at UTC+1 since 1912.