Daylight Saving Time in Houston, Texas

How Daylight Saving Time Affects Houston

Houston, Texas observes daylight saving time (DST) as mandated by the Uniform Time Act. When DST begins in March, Houston moves from Central Standard Time (CST, UTC−6) to Central Daylight Time (CDT, UTC−5). This means Houston gains an extra hour of evening sunlight.

When DST ends in November, clocks "fall back" one hour, returning to CST. This results in earlier sunsets but an extra hour of morning daylight. The time change always occurs at 2:00 AM local time.

For Houston residents, the spring transition is particularly noticeable — sunset shifts from around 6:30 PM to 7:30 PM overnight, giving Houstonians more daylight for evening activities. In a city where outdoor temperatures are often most pleasant in the evening hours, this extra light is widely appreciated.

How DST Affects International Time Differences

One of the trickiest aspects of daylight saving time is how it affects Houston's time difference with other cities. Within the US, the difference between Houston and other cities remains constant because all US time zones (except Arizona and Hawaii) switch on the same dates.

However, international differences temporarily shift during the weeks when one country has changed clocks but the other hasn't:

• Houston → London: Usually 6 hours, but briefly 5 hours in early November and 7 hours in late March when the US and UK change on different weekends
• Houston → Tokyo: Alternates between 14 hours (CDT) and 15 hours (CST) — Japan does not observe DST
• Houston → Dubai: Shifts between 9 hours (CDT) and 10 hours (CST) — UAE does not observe DST
• Houston → Sydney: The most complex — both countries observe DST but in opposite seasons, creating differences that range from 15 to 17 hours

History of Daylight Saving in Texas

The United States first adopted daylight saving time during World War I in 1918 to conserve fuel. It was repealed after the war but brought back during World War II as "War Time." After inconsistent adoption across states and cities, Congress passed the Uniform Time Act of 1966, standardizing DST nationwide while allowing states to opt out entirely.

Texas has observed DST continuously since 1966. The Energy Policy Act of 2005 extended DST by about four weeks, moving the start from the first Sunday of April to the second Sunday of March, and the end from the last Sunday of October to the first Sunday of November. This change took effect in 2007 and is the schedule Houston follows today.

In 2022, the US Senate unanimously passed the Sunshine Protection Act, which would have made daylight saving time permanent year-round. However, the bill did not pass the House of Representatives. Similar proposals have been introduced in the Texas state legislature, but as of 2025, Houston continues to observe the biannual clock change.

Tips for Adjusting to Time Changes in Houston

• Gradually adjust your sleep schedule by 15 minutes per day in the week before the change
• Update all manual clocks, oven timers, and car clocks (phones and computers update automatically)
• Be aware that flight schedules may appear to change — a 2-hour flight from Houston to New York still takes 2 hours, but arrival time shifts
• Check recurring meeting times with international contacts, especially during the weeks when different countries change clocks
• Replace smoke detector batteries when you change your clocks — a widely recommended safety practice
• Expect slightly increased traffic accident rates in the days following "spring forward" due to lost sleep
• Morning commuters in Houston will notice a temporary return to darker mornings after the spring change

Frequently Asked Questions About Houston DST

Does all of Texas observe daylight saving time?

Almost all of Texas observes DST. The one exception is a small portion of far west Texas near El Paso, which follows Mountain Time (MST/MDT) rather than Central Time, but still observes DST.

What would happen if Houston stopped observing DST?

If Texas adopted permanent standard time (CST), Houston would stay at UTC−6 year-round. Summer sunsets would move from ~8:30 PM to ~7:30 PM. If Texas adopted permanent daylight time (CDT), winter sunrises would be delayed by an hour, with sunrise as late as 8:20 AM in December.

When is the next Houston time change?

Check the table above for exact dates. Houston always changes clocks at 2:00 AM local time — forward in March and back in November.