Sudan time zone history
The latest change of standard time came on November 1, 2017, from UTC+3 to UTC+2. Khartoum kept local mean time (UTC+2:10:08) until 1931, tied for the latest switch among the 23 zones on UTC+2 standard time. Daylight saving time was used in 16 years since 1970, last in 1985; under the current rules the clocks no longer change.
UTC+2
Standard time is UTC+2 (CAT) all year under the current rules.
Summer time in 16 of 57 years since 1970
Before 1970
Standard time changes
| Date | Change | New standard time | Clock label |
|---|---|---|---|
| Before 1970 | |||
| January 1, 1931 | Local mean time (UTC+2:10:08) replaced | UTC+2 | CAT |
| Since 1970 | |||
| January 15, 2000 | Standard time forward 1 hour | UTC+3 | EAT |
| November 1, 2017 | Standard time back 1 hour | UTC+2 | CAT |
Daylight saving periods
| Years | Clocks go forward | Clocks go back | Shift and labels |
|---|---|---|---|
| 1970 | May 1 | October 15 | 1 hour, CAT to CAST |
| 1971–1972 | 30 April, 00:00 | 15 October, 00:00 | 1 hour, CAT to CAST |
| 1973–1985 | last Sunday in April, 00:00 | 15 October, 00:00 | 1 hour, CAT to CAST |
Also on UTC+2
South Sudan, Egypt, Gaza (Palestine), Hebron (Palestine), Israel, Lebanon, Famagusta (Cyprus), Nicosia (Cyprus), Greece and Libya (nearest first; 12 more on the list of offsets).
Clocks next door since 1970
- South Sudan (1,200 km): same time except 1,188 days in 2017–2021.
- Egypt (1,612 km): same time except 8,154 days in 1970–2017 and 2023–2026.
- Gaza (Palestine) (1,779 km): same time except 9,557 days in 1970–2026.
- Saudi Arabia (1,787 km): usually 1 hour ahead; different on 9,225 days in 1970–1985 and 2000–2017.
- Hebron (Palestine) (1,791 km): same time except 9,522 days in 1970–2026.
How it compares
On standard time, clocks in Khartoum run 10 minutes behind local mean solar time.