Most of Texas observes Central Time, while a small portion of West Texas follows Mountain Time. If you're scheduling a call across Houston, Dallas, Austin, or San Antonio, you're working with Central Standard Time (CST) or Central Daylight Time (CDT). Understanding how the state splits its clocks prevents missed meetings and travel confusion.
Texas spans two distinct time zones due to its massive geographic footprint. While 251 of its 254 counties run on Central Time, the far western edge maintains a different schedule. Both zones observe Daylight Saving Time, meaning clocks shift forward in March and backward in November.
The Two Texas Time Zones
The vast majority of the state operates under the Central Time Zone. Major metropolitan areas including Austin, Dallas, Fort Worth, Houston, San Antonio, Corpus Christi, and Lubbock all share this schedule.
- Central Standard Time (CST): UTC-6, active from early November to mid-March.
- Central Daylight Time (CDT): UTC-5, active from mid-March to early November.
Only a tiny fraction of West Texas operates on the Mountain Time Zone. This region sits adjacent to New Mexico and shares its clock.
- Mountain Standard Time (MST): UTC-7, active during standard time months.
- Mountain Daylight Time (MDT): UTC-6, active during daylight saving months.
Which Counties Use Mountain Time?
Only El Paso County and Hudspeth County officially observe Mountain Time. Northwestern portions of Culberson County, particularly areas near the Guadalupe Mountains National Park, also unofficially align with Mountain Time due to geographic isolation and economic ties to El Paso.
If you travel west past Pecos or Van Horn on Interstate 10, you cross the boundary line. Your phone or car clock automatically jumps back one hour when entering the Mountain zone. Major cities in this western enclave include El Paso, Socorro, and San Elizario.
Daylight Saving Time Rules in Texas
Texas follows federal guidelines for Daylight Saving Time (DST). Clocks spring forward one hour on the second Sunday in March and fall back one hour on the first Sunday in November.
State lawmakers have periodically introduced bills to abolish clock changes or keep Texas on standard time year-round, but none have passed. For now, businesses and residents across both time zones must continue adjusting their clocks twice a year.
Practical Scheduling Across Texas
If you coordinate events between different regions of the state, keep the one-hour difference in mind. A business meeting set for 9:00 AM in Dallas (Central Time) starts at 8:00 AM in El Paso (Mountain Time).
For national and international travelers, remember that Texas crosses two major commercial hubs. Flight itineraries departing from Dallas/Fort Worth International (DFW) or George Bush Intercontinental (IAH) use Central Time, while flights out of El Paso International (ELP) use Mountain Time. Always double-check digital calendar invites, as tools like Google Calendar automatically adjust for local offsets based on zip codes.
Frequently Asked Questions
Does all of Texas observe Daylight Saving Time?
Yes. Every county in Texas, whether in the Central or Mountain zone, observes Daylight Saving Time. There are no exempt areas like Arizona or Hawaii.
What is the time difference between Houston and El Paso?
El Paso is exactly one hour behind Houston. When it's noon in Houston, it's 11:00 AM in El Paso.
Do neighboring states share the same time zones as Texas?
It depends on the border. Oklahoma, Arkansas, and Louisiana sit entirely in the Central Time Zone. New Mexico sits entirely in the Mountain Time Zone, which explains why West Texas shares its clock with its western neighbor rather than the rest of the Lone Star State.
How do I check the exact current time in Texas?
You can check official time trackers like Time and Date to view live, synchronized offsets for specific Texas counties.
