San Antonio, United States · UTC-5
Convert time from San Antonio
San Antonio is in the Central Time timezone (CST/UTC-6 in winter, CDT/UTC-5 in summer), matching Houston and Austin on the same Texas-wide schedule.
On February 23, 1836, the Mexican army under General Santa Anna laid siege to the Alamo mission in San Antonio de Béxar. The siege lasted 13 days. On March 6, the final assault killed the 182 to 260 defenders inside. “Remember the Alamo” became the battle cry of the Texas Revolution. The exact morning of March 6, 1836, at pre-dawn, is one of the most precisely remembered moments in Texan mythology.
San Antonio runs on Central Time, UTC-6 in winter (CST) and UTC-5 in summer (CDT), the same clock as Houston and Austin across Texas. The uniform time reflects the state’s commerce and communication patterns, though Texas’s longitude spans from UTC-7 territory in the west (El Paso) to the east.
The River Walk, the famous paseo along the San Antonio River below street level, defines the city’s social geography. Restaurants and bars face the water; the ambient noise of the city is muted by the embankment walls. The River Walk operates late by Texas standards, the tables full until midnight in summer.
military bases and River Walk nights
San Antonio’s military presence: Fort Sam Houston, Lackland Air Force Base, Randolph Air Force Base, gives it a military clock overlay. Base schedules, deployments, and the 24-hour operational rhythms of the installations run beneath the civilian city’s schedule.
9am in San Antonio is 3pm in London in winter.
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Questions about time in San Antonio
- What timezone is San Antonio in?
- San Antonio is in Central Time (CT), using the IANA timezone
America/Chicago. The standard UTC offset is UTC-6 (CST) in winter and UTC-5 (CDT) during daylight saving time. - Does San Antonio observe daylight saving time?
- Yes. San Antonio observes daylight saving time, shifting from UTC-6 (standard time) to UTC-5 in summer.
- What is the current UTC offset for San Antonio?
- San Antonio is currently at UTC-5. It is currently observing daylight saving time.
- What is the time difference between San Antonio and New York?
- San Antonio is currently 1 hour behind New York.
- What is the time difference between San Antonio and London?
- San Antonio is currently 6 hours behind London.
- What is the time difference between San Antonio and Los Angeles?
- San Antonio is currently 2 hours ahead of Los Angeles.
- What is the time difference between San Antonio and Tokyo?
- San Antonio is currently 14 hours behind Tokyo. Tokyo does not observe daylight saving time, so this gap changes by 1 hour when San Antonio transitions to/from DST.
- What is the IANA timezone name for San Antonio?
- The IANA timezone database identifier for San Antonio is
America/Chicago. Use this string in programming languages and APIs: JavaScript (`new Intl.DateTimeFormat('en-US', { timeZone: 'America/Chicago' })`), Python (`pytz.timezone('America/Chicago')`), or any IANA-compatible library.