Ciudad Juárez time zone history
The latest change of standard time came on November 30, 2022, from UTC−6 to UTC−7. Seasonal clock changes began only in 1996 and are still in use. The Ciudad Juárez zone has changed its standard time 3 times since 1970, the second-most of the 12 zones in Mexico.
UTC−7
Standard time is UTC−7 (MDT/MST); clocks go forward to UTC−6 on the second Sunday in March and back on the first Sunday in November.
Summer time in 31 of 57 years since 1970
Before 1970
Standard time changes
| Date | Change | New standard time | Clock label |
|---|---|---|---|
| Before 1970 | |||
| December 31, 1921 | Local mean time (UTC−7:05:56) replaced | UTC−7 | MST |
| June 10, 1927 | Standard time forward 1 hour | UTC−6 | CST |
| November 15, 1930 | Standard time back 1 hour | UTC−7 | MST |
| April 1, 1932 | Standard time forward 1 hour | UTC−6 | CST |
| Since 1970 | |||
| April 5, 1998 | Summer offset kept as standard time; clocks did not move | UTC−7 | MST |
| October 30, 2022 | Summer offset kept as standard time; clocks did not move | UTC−6 | CST |
| November 30, 2022 | Standard time back 1 hour | UTC−7 | MST |
Daylight saving periods
| Years | Clocks go forward | Clocks go back | Shift and labels |
|---|---|---|---|
| Before 1970 | |||
| 1931 | April 30 | October 1 | 1 hour, MST to MDT |
| Since 1970 | |||
| 1996–1997 | first Sunday in April, 02:00 | last Sunday in October, 02:00 | 1 hour, CST to CDT |
| 1998 | not that year | October 25 | 1 hour |
| 1999–2000 | first Sunday in April, 02:00 | last Sunday in October, 02:00 | 1 hour, MST to MDT |
| 2001 | May 6 | September 30 | 1 hour, MST to MDT |
| 2002–2009 | first Sunday in April, 02:00 | last Sunday in October, 02:00 | 1 hour, MST to MDT |
| 2010–2021 | second Sunday in March, 02:00 | first Sunday in November, 02:00 | 1 hour, MST to MDT |
| 2022 | March 13 | not that year | 1 hour, MST to MDT |
| 2023–2037 | second Sunday in March, 02:00 | first Sunday in November, 02:00 | 1 hour, MST to MDT |
Clock changes in 2026, 2027 and 2028
The clocks go forward 1 hour (MST to MDT) on March 8, 2026, March 14, 2027 and March 12, 2028 at 02:00 and back 1 hour (MDT to MST) on November 1, 2026, November 7, 2027 and November 5, 2028 at 02:00, local time.
Also on UTC−7
Hermosillo (Mexico), Phoenix (United States), Denver (United States), Mazatlan (Mexico), Boise (United States), Vancouver (Canada), Dawson Creek (Canada), Fort Nelson (Canada), Whitehorse (Canada) and Cambridge Bay (Canada) (nearest first; 1 more on the list of offsets).
Clocks next door since 1970
- Ojinaga (312 km): same time except 1,493 days in 2022–2026; 1 hour ahead today.
- Chihuahua (347 km): same time except 933 days in 2010–2026; 1 hour ahead today.
- Hermosillo (522 km): usually 1 hour behind; different on 4,210 days in 1996–2026; same time today.
- Phoenix (United States) (557 km): usually 1 hour behind; different on 4,413 days in 1996–2026; same time today.
- Denver (United States) (900 km): same time except 5,334 days in 1970–1998, 2001, 2007–2009 and 2022.
How it compares
Ciudad Juárez kept local mean time (UTC−7:05:56) until 1921, tied for the latest switch among the 11 zones on UTC−7 standard time with local mean time in the record.
On standard time, clocks in Ciudad Juárez run 6 minutes ahead of local mean solar time.