Offset
The time difference between San Antonio and Eastern Time is 1 hour.
San Antonio (CDT) is behind Eastern Time (EDT).
CDT: UTC-5
EDT: UTC-4
Both zones are currently observing daylight saving time.
When to schedule
Business-hours overlap: 9 AM–4 PM in San Antonio (10 AM–5 PM in Eastern Time).
Both teams are in working hours during this window on weekdays.
Suggested time: 12:00 PM San Antonio (1:00 PM Eastern Time).
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
About these zones
San Antonio uses Central Time (CST, or CDT). To call United States, dial +1.
Eastern Time is also known as EST, or EDT. To call United States, dial +1.
Eastern Time is approximately 1,600 miles northeast of San Antonio.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| San Antonio | EST | Day |
|---|---|---|
| 12:00 am | 1:00 am | Same day |
| 1:00 am | 2:00 am | Same day |
| 2:00 am | 3:00 am | Same day |
| 3:00 am | 4:00 am | Same day |
| 4:00 am | 5:00 am | Same day |
| 5:00 am | 6:00 am | Same day |
| 6:00 am | 7:00 am | Same day |
| 7:00 am | 8:00 am | Same day |
| 8:00 am | 9:00 am | Same day |
| 9:00 am | 10:00 am | Same day |
| 10:00 am | 11:00 am | Same day |
| 11:00 am | 12:00 pm | Same day |
| 12:00 pm | 1:00 pm | Same day |
| 1:00 pm | 2:00 pm | Same day |
| 2:00 pm | 3:00 pm | Same day |
| 3:00 pm | 4:00 pm | Same day |
| 4:00 pm | 5:00 pm | Same day |
| 5:00 pm | 6:00 pm | Same day |
| 6:00 pm | 7:00 pm | Same day |
| 7:00 pm | 8:00 pm | Same day |
| 8:00 pm | 9:00 pm | Same day |
| 9:00 pm | 10:00 pm | Same day |
| 10:00 pm | 11:00 pm | Same day |
| 11:00 pm | 12:00 am | +1 day |
Daylight saving time
Both San Antonio and Eastern Time observe daylight saving time and transition on the same date.
Next transition: Sunday, November 1, 2026 (fall back).
Because they transition simultaneously, the offset between these zones remains constant year-round.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 6:48 AM
- Sunset
- 8:34 PM
- Day length
- 13h 45m
- Sunrise
- 5:43 AM
- Sunset
- 8:23 PM
- Day length
- 14h 40m
Daylight overlap: 12h 35m — 6:48 AM–7:23 PM in San Antonio (7:48 AM–8:23 PM in Eastern Time). Both locations are in daylight during this window.
Cities in these zones
Other cities in Central Time
Cities in Eastern Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Central Time
- GYY
- MDW
- ORD
- HOU
- IAH
- SAT
- DAL
- DFW
- AUS
- BNA
Airports in Eastern Time
- EWR
- HPN
- JFK
- LGA
- TEB
- ILG
- PHL
- TTN
- CLT
- USA
Related conversions
Common conversions
- What is 9:00 am San Antonio in EST?
- 9:00 am San Antonio is 10:00 am EST.
- What is 12:00 pm San Antonio in EST?
- 12:00 pm San Antonio is 1:00 pm EST.
- What is 12:30 pm San Antonio in EST?
- 12:30 pm San Antonio is 1:30 pm EST.
- What is 2:00 pm San Antonio in EST?
- 2:00 pm San Antonio is 3:00 pm EST.
- What is 5:00 pm San Antonio in EST?
- 5:00 pm San Antonio is 6:00 pm EST.
- What is 11:30 pm San Antonio in EST?
- 11:30 pm San Antonio is 12:30 am EST, the next day.