Introduction to Daylight Saving Time Changes in Mexico
In 2025, the seasonal time adjustment, commonly known as Daylight Saving Time (DST), will only apply to certain municipalities along Mexico’s northern border. This change stems from a reform in the Ley de los Husos Horarios (Law of Time Zones) in Mexico, which led to most of the country phasing out DST. The exception remains in border zones requiring synchronization with the United States due to economic and geographical factors.
Why the Change?
The reform aims to align Mexico’s time with its significant economic activities and geographical positioning relative to the United States. As a result, most of Mexico will no longer observe DST, except for the specified border regions.
Which States and Municipalities Will Adjust Their Clocks?
The following states and municipios will continue to adjust their clocks for DST in 2025. The changes will take effect on the early morning of Sunday, November 2nd, when clocks will be set back by an hour (from 02:00 to 01:00) to mark the end of the seasonal time adjustment period.
Baja California
- All municipalities in Baja California will apply the time change.
Chihuahua
- Coyame del Sotol, Ojinaga, Manuel Benavides, Janos, Ascensión, Juárez, Praxedis G. Guerrero, and Guadalupe municipios will adjust their clocks.
Coahuila
- Acuña, Allende, Guerrero, Hidalgo, Jiménez, Morelos, Nava, Ocampo, Piedras Negras, Villa Unión, and Zaragoza municipios will adjust their clocks.
Nuevo León
- Only the Anáhuac municipio will adjust its clock for DST.
Tamaulipas
- Nuevo Laredo, Guerrero, Mier, Miguel Alemán, Camargo, Gustavo Díaz Ordaz, Reynosa, Río Bravo, Valle Hermoso, and Matamoros municipios will adjust their clocks.
Conclusion: The Rest of the Country
For the remaining states in Mexico, there will be no adjustments to their clocks for Daylight Saving Time in 2025. The specified border regions are the only areas that will continue to observe the seasonal time change.
Key Questions and Answers
- What is the reason for this change in Daylight Saving Time adjustments? The reform aims to synchronize Mexico’s time with its significant economic activities and geographical positioning relative to the United States.
- Which states and municipalities will still observe Daylight Saving Time in 2025? Baja California, Chihuahua (specific municipios), Coahuila (specific municipios), Nuevo León (Anáhuac), and Tamaulipas (specific municipios) will continue to adjust their clocks for DST.
- When will the clock adjustment take place in 2025? The change will occur on the early morning of Sunday, November 2nd, when clocks will be set back by an hour (from 02:00 to 01:00).
- Which states will not adjust their clocks for Daylight Saving Time in 2025? The majority of Mexico’s states will not adjust their clocks for DST in 2025, except for the specified border regions.
