Time in San Antonio, United States
Monday, September 21, 2026
When San Antonio changes its clocks
San Antonio is one of the places that still shifts its clocks twice a year
San Antonio keeps Central Standard Time at UTC-06:00 for most of the year, and moves to Central Daylight Time at UTC-05:00 during its summer. The shift is 1 hour.
Next change
1 November 2026 — clocks move back by 1 hour, from UTC-05:00 to UTC-06:00.
Upcoming transition dates
- 8 March 2026 — forward to UTC-05:00
- 1 November 2026 — back to UTC-06:00
- 14 March 2027 — forward to UTC-05:00
- 7 November 2027 — back to UTC-06:00
- 12 March 2028 — forward to UTC-05:00
- 5 November 2028 — back to UTC-06:00
When the gap to San Antonio changes
Dates in the next year where the difference shifts, by counterpart city
The difference between two cities is not a constant. It changes whenever either side moves its clocks — and because regions switch on different dates, there are short windows each year when the usual gap is wrong. These are the dates that matter for San Antonio:
London (United Kingdom)
- From 25 October 2026: San Antonio is 5 hours behind London
- From 1 November 2026: San Antonio is 6 hours behind London
- From 14 March 2027: San Antonio is 5 hours behind London
- From 28 March 2027: San Antonio is 6 hours behind London
Frankfurt (Germany)
- From 25 October 2026: San Antonio is 6 hours behind Frankfurt
- From 1 November 2026: San Antonio is 7 hours behind Frankfurt
- From 14 March 2027: San Antonio is 6 hours behind Frankfurt
- From 28 March 2027: San Antonio is 7 hours behind Frankfurt
Tokyo (Japan)
- From 1 November 2026: San Antonio is 15 hours behind Tokyo
- From 14 March 2027: San Antonio is 14 hours behind Tokyo
Daylight and the sun over San Antonio
San Antonio sits at 29.42°, -98.49°
Longest day
14h 02m of daylight
Shortest day
10h 15m of daylight
Yearly swing
3h 47m between them
Clock time versus solar time
When the clock in San Antonio reads 12:00, the sun is not yet overhead — the civil clock runs 34 minutes ahead of mean solar time here.
During summer time that gap widens to 1 hour 34 minutes ahead of the sun, which is the whole point of the exercise — shifting daylight into the evening.
Quick Time Comparisons
See how San Antonio time compares to other major cities right now
Time Zone Offset from San Antonio
Best Times to Contact San Antonio
Optimal calling and meeting hours
Business Hours
Typically 9:00 AM - 5:00 PM local time
Best for professional calls, meetings, and business inquiries
Personal Calls
Evenings 7:00 PM - 10:00 PM local time
Ideal for catching up with family and friends
Pro Tip: Use the meeting coordinator tool above to find overlapping working hours between your location and San Antonio. This makes scheduling international meetings much easier!
Cultural Business Context
San Antonio, United States • 05:24 local time
Consider Timing
Outside business hours
Quick Stats
Business Hours Timeline
Best Times to Contact
Times to Avoid
Business hours: 09:00 - 17:00 | Weekend: Sunday, Saturday | Lunch: 12:00 - 13:00
🌍 Cultural awareness enhances business relationships and prevents scheduling conflicts across global teams
Places related to San Antonio
Cities that share a clock, a country, or an offset
On exactly the same clock as San Antonio
These share the America/Chicago zone, so they keep the same time as San Antonio and change their clocks on the same dates.
Elsewhere in United States
United States spans more than one time zone, so these cities are not on San Antonio's clock — a common source of scheduling errors when people pick a country rather than a city.
Same offset (UTC-06:00), different part of the world
These sit in other countries but keep the same standard offset as San Antonio (Central Standard Time). They will not necessarily change clocks on the same dates, so the match can be seasonal rather than permanent.
Meeting Time Coordinator
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Common Questions About San Antonio Time
Frequently asked questions
What time zone is San Antonio in?
San Antonio operates in the America/Chicago time zone, known as Central Standard Time, currently UTC-06:00 (UTC-05:00 during summer time). This clock applies that offset directly from the IANA time zone database.
Does San Antonio observe daylight saving time?
Yes. San Antonio shifts its clocks by 1 hour, between UTC-06:00 and UTC-05:00. The next change is on 1 November 2026.
What's the time difference between San Antonio and my location?
The time comparison tool above shows the current time difference. You can also use our meeting coordinator to find the best times for calls across different time zones.
How accurate is this San Antonio clock?
Our clock synchronizes with your device's time and applies the official America/Chicago time zone offset. It updates every second and automatically handles daylight saving time, ensuring accuracy within a second.
Can I use this for scheduling meetings in San Antonio?
Yes! This tool is perfect for scheduling. Use the meeting coordinator above to compare multiple time zones and find optimal meeting times that work for everyone in San Antonio and other locations.
Time Zone Facts About San Antonio
Interesting information about San Antonio's time
IANA identifier
America/Chicago
Standard time name
Central Standard Time
Standard offset
UTC-06:00
Daylight saving
Observed — clocks shift 1 hour to UTC-05:00
Region
North America
Population
1,547,253