Guatemala time zone history
Standard time has stayed at UTC−6 since 1918, the second-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 5 years since 1970, last in 2006; 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 5 of 57 years since 1970
Before 1970
Standard time changes
| Date | Change | New standard time | Clock label |
|---|---|---|---|
| Before 1970 | |||
| October 5, 1918 | Local mean time (UTC−6:02:04) replaced | UTC−6 | CST |
Daylight saving periods
| Years | Clocks go forward | Clocks go back | Shift and labels |
|---|---|---|---|
| 1973 | November 25 | not that year | 1 hour, CST to CDT |
| 1974 | not that year | February 24 | 1 hour, CST to CDT |
| 1983 | May 21 | September 22 | 1 hour, CST to CDT |
| 1991 | March 23 | September 7 | 1 hour, CST to CDT |
| 2006 | April 30 | October 1 | 1 hour, CST to CDT |
Also on UTC−6
El Salvador, Honduras, Belize, Nicaragua, Mérida (Mexico), 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
- El Salvador (176 km): same time except 831 days in 7 different years between 1973 and 2006.
- Honduras (360 km): same time except 739 days in 7 different years between 1973 and 2006.
- Belize (404 km): same time except 527 days in 1973, 1974, 1982, 1983, 1991 and 2006.
- Nicaragua (535 km): same time except 2,958 days in 15 different years between 1973 and 2006.
- Mérida (Mexico) (711 km): same time except 6,062 days in 1973, 1974, 1981–1983, 1991 and 1996–2022.
- Cancún (Mexico) (820 km): same time except 8,979 days in 1973, 1974, 1981–1983, 1991 and 1996–2026; 1 hour ahead today.
How it compares
On standard time, clocks in Guatemala run 2 minutes ahead of local mean solar time.