When you ask what time in Texas it is, you're looking at a state spanning two distinct time zones. While the vast majority of the Lone Star State operates on Central Time, the far western edge runs an hour behind on Mountain Time. This split affects millions of residents, travelers driving across Interstate 10, and businesses coordinating schedules between Houston and El Paso.
Understanding how Texas tracks hours involves more than glancing at a single clock. Daylight saving rules, county lines, and historical adjustments shape the daily schedule across 254 counties.
The Two Texas Time Zones Explained
Texas is primarily a Central Time state. Major metropolitan areas like Houston, Dallas, Austin, San Antonio, Fort Worth, and Corpus Christi sit firmly in the Central Time Zone (CT). This zone observes Central Standard Time (CST, UTC-6) during winter months and Central Daylight Time (CDT, UTC-5) during the summer.
In the extreme western corner of the state, a small geographic exception exists. El Paso County, Hudspeth County, and parts of Culberson County operate on Mountain Time (MT). These areas observe Mountain Standard Time (MST, UTC-7) and Mountain Daylight Time (MDT, UTC-6). If you travel west from San Antonio toward El Paso on Interstate 10, you cross an invisible boundary near the Pecos River valley that forces your watch back sixty minutes.
Counties on Mountain Time
Only two counties are entirely within the Mountain Time Zone:
- El Paso County: Includes the city of El Paso, Fabens, and surrounding West Texas communities.
- Hudspeth County: Includes Sierra Blanca, Dell City, and Fort Hancock.
Portions of Culberson County, specifically areas west of the Pecos River including parts of Guadalupe Mountains National Park, informally align with Mountain Time due to close economic ties with El Paso, though official federal demarcations can occasionally spark local nuances. Towns just east, like Van Horn and Marfa, remain strictly on Central Time.
Daylight Saving Time in Texas
Like most of the United States, Texas adjusts clocks twice a year under the Uniform Time Act.
- Spring Forward: On the second Sunday in March at 2:00 a.m. local time, clocks move forward one hour. Central Time shifts from UTC-6 to UTC-5, and Mountain Time shifts from UTC-7 to UTC-6.
- Fall Back: On the first Sunday in November at 2:00 a.m. local time, clocks turn back one hour, returning regions to standard time.
The shift happens simultaneously within each zone, meaning the one-hour gap between El Paso and Dallas remains constant year-round regardless of seasonal adjustments.
Practical Impact on Travel and Business
Managing appointments or transit across the Texas time divide requires careful planning. A flight from Dallas/Fort Worth International Airport (DFW) to El Paso International Airport (ELP) takes roughly two hours in the air, but passengers land one hour earlier than departure local time.
For remote teams and statewide corporations, scheduling meetings between the Central and Mountain zones is straightforward compared to cross-country calls, but midday deadlines still require noting which local time applies. State government operations in Austin function entirely on Central Time, setting the administrative pace for agencies statewide.
Frequently Asked Questions
Does all of Texas observe daylight saving time?
Yes. Every county in Texas observes daylight saving time, moving clocks forward in March and back in November. There are no localized exemptions within state borders, unlike states such as Arizona.
How far ahead is Houston compared to El Paso?
Houston is always one hour ahead of El Paso. When it is noon in Houston, it is 11:00 a.m. in El Paso.
Has Texas always had two time zones?
Mostly, though history shows minor shifts. For a brief period between 1919 and 1921, parts of the Texas Panhandle experimented with Mountain Time before returning permanently to the Central zone.
Where is the exact border between the two time zones?
The official boundary runs along the eastern edge of Hudspeth County, separating it from Culberson County along the West Texas desert landscape.
