4.9 out of 5 — 250465 votes

Coahuila, Mexico

Most of Coahuila keeps Central Standard Time, UTC−6, year-round. Certain municipalities beside the United States border observe seasonal clock changes, making the correct local time dependent on both the place and the date.

Torreon, Mexico

Friday, 4 September 2026

UTC−6 · America/Monterrey

Time and sun data for Torreon — the largest city of Coahuila

The sun in Torreon

Sunrise 06:36 Solar noon 12:54 Sunset 19:11 Daylight 12 h 35 min Night 11 h 25 min Civil twilight 06:13 – 19:34

Mexico · 15 208 cities · page 1 of 77

Largest cities

All cities — page 1

Current time in Coahuila, Mexico

For Saltillo, Torreón, Monclova, and most other communities, use UTC−6 without a seasonal adjustment. The northern border has special arrangements intended to keep participating Mexican municipalities coordinated with neighboring communities across the frontier.

This means that a state-level clock is useful as a general reference but may be wrong for a border appointment. During the seasonal period, an eligible border municipality advances its clock while the interior does not. Outside that period, the two areas can return to the same displayed hour.

A meeting “somewhere in Coahuila” has a location problem before it has a punctuality problem.

From Saltillo to the northern border

Coahuila’s major population centers include Saltillo, Torreón, Monclova, Piedras Negras, Acuña, and Sabinas. Saltillo is the state capital. Torreón forms part of the cross-state La Laguna urban area, while Piedras Negras and Acuña are international border cities.

Name the city instead of selecting Coahuila alone. Check whether the municipality follows the northern-border clock provision. Include the calendar date when planning beyond the current season. Add the UTC offset when participants use different calendar systems.

Travelers should let network time update only after confirming that the device has identified the correct municipality. Near a border, automatic location and cellular routing do not always provide the clearest explanation of an unexpected hour difference.

Sunrise in a broad east-west state

The sunrise hour varies across Coahuila because the state extends over substantial distances. A calculation for Saltillo should not be substituted for Piedras Negras, Torreón, or a rural point in the desert. The date matters as well, since the Sun’s apparent path changes through the year.

Clock policy and daylight are separate ideas. Advancing a clock changes the label attached to sunrise, not the astronomical event. Consequently, a northern border city may display a later sunrise by the clock after a seasonal change even though the natural day continues its gradual progression.

Elevation and surrounding landforms affect the moment direct sunlight reaches an observer. Calculated sunrise generally assumes a conventional horizon; nearby hills, buildings, dust, or cloud can alter the practical experience. Dawn information is often more useful than sunrise alone when deciding when usable morning light begins.

Questions and answers
What time zone does Saltillo use?
Saltillo uses Central Standard Time at UTC−6 and does not make a seasonal clock change.
Why can a Coahuila border city show another time?
Specified northern border municipalities follow seasonal changes coordinated with adjacent United States areas.
Can one sunrise time represent the whole state?
No. Choose exact coordinates or a nearby city and the intended date, especially for travel or outdoor activity.

Related tools and information

All pages