Belize time zone history
Standard time has stayed at UTC−6 since 1912, the longest run of the 10 zones on UTC−6 standard time with no change of standard time since 1970. Daylight saving time was used in 4 years since 1970, last in 1983; under the current rules the clocks no longer change.
UTC−6
Standard time is UTC−6 (CST) all year under the current rules.
Summer time in 4 of 57 years since 1970
Before 1970
Standard time changes
| Date | Change | New standard time | Clock label |
|---|---|---|---|
| Before 1970 | |||
| April 1, 1912 | Local mean time (UTC−5:52:48) replaced | UTC−6 | CST |
Daylight saving periods
| Years | Clocks go forward | Clocks go back | Shift and labels |
|---|---|---|---|
| Before 1970 | |||
| 1918 | October 6 | not that year | 30 minutes |
| 1919 | October 5 | February 9 | 30 minutes |
| 1920 | October 3 | February 15 | 30 minutes |
| 1921 | October 2 | February 13 | 30 minutes |
| 1922 | October 8 | February 12 | 30 minutes |
| 1923–1924 | first Sunday in October, 00:00 | second Sunday in February, 00:00 | 30 minutes |
| 1925 | October 4 | February 15 | 30 minutes |
| 1926–1930 | first Sunday in October, 00:00 | second Sunday in February, 00:00 | 30 minutes |
| 1931 | October 4 | February 15 | 30 minutes |
| 1932 | October 2 | February 14 | 30 minutes |
| 1933 | October 8 | February 12 | 30 minutes |
| 1934–1938 | first Sunday in October, 00:00 | second Sunday in February, 00:00 | 30 minutes |
| 1939 | October 8 | February 12 | 30 minutes |
| 1940–1941 | first Sunday in October, 00:00 | second Sunday in February, 00:00 | 30 minutes |
| 1942 | June 28 | February 15 | 1 hour, CST to CWT |
| 1945 | not that year | December 16 | 1 hour |
| 1947 | October 5 | not that year | 30 minutes |
| 1948 | October 3 | February 15 | 30 minutes |
| 1949 | October 2 | February 13 | 30 minutes |
| 1950 | October 8 | February 12 | 30 minutes |
| 1951–1952 | first Sunday in October, 00:00 | second Sunday in February, 00:00 | 30 minutes |
| 1953 | October 4 | February 15 | 30 minutes |
| 1954–1958 | first Sunday in October, 00:00 | second Sunday in February, 00:00 | 30 minutes |
| 1959 | October 4 | February 15 | 30 minutes |
| 1960 | October 2 | February 14 | 30 minutes |
| 1961 | October 8 | February 12 | 30 minutes |
| 1962–1966 | first Sunday in October, 00:00 | second Sunday in February, 00:00 | 30 minutes |
| 1967 | October 8 | February 12 | 30 minutes |
| 1968 | not that year | February 11 | 30 minutes |
| Since 1970 | |||
| 1973 | December 5 | not that year | 1 hour, CST to CDT |
| 1974 | not that year | February 9 | 1 hour, CST to CDT |
| 1982 | December 18 | not that year | 1 hour, CST to CDT |
| 1983 | not that year | February 12 | 1 hour, CST to CDT |
Also on UTC−6
Honduras, Guatemala, Mérida (Mexico), El Salvador, Nicaragua, Costa Rica, Mexico City (Mexico), Matamoros (Mexico), Monterrey (Mexico) and Bahía de Banderas (Mexico) (nearest first; 17 more on the list of offsets).
Clocks next door since 1970
- Honduras (392 km): same time except 508 days in 7 different years between 1973 and 2006.
- Guatemala (404 km): same time except 527 days in 1973, 1974, 1982, 1983, 1991 and 2006.
- Mérida (Mexico) (413 km): same time except 5,955 days in 1973, 1974, 1981–1983 and 1996–2022.
- Cancún (Mexico) (426 km): same time except 8,838 days in 1973, 1974, 1981–1983 and 1996–2026; 1 hour ahead today.
- El Salvador (436 km): same time except 416 days in 1973, 1974, 1982, 1983, 1987 and 1988.
How it compares
On standard time, clocks in Belize run 7 minutes behind local mean solar time.