The time difference between London and San Antonio is 5 hours. When it is 12:00 noon in London, it is 07:00 in San Antonio. London uses the Europe/London time zone (UTC+0), while San Antonio uses America/Chicago (UTC-5).
| Detail | London | San Antonio |
|---|---|---|
| Time Zone ID | Europe/London | America/Chicago |
| UTC Offset | UTC+0 | UTC-5 |
| Abbreviation | GMT | CDT |
| DST Active | No | Yes — currently observing |
| Country | United Kingdom | United States |
| Region | Europe | North America |
There are 3 overlapping business hours between London and San Antonio (assuming 9:00–17:00 in each city). The ideal window for calls and meetings is:
Use this table to quickly convert any hour from London time to San Antonio time. Rows highlighted in green indicate overlapping business hours in both cities.
| London | San Antonio | |
|---|---|---|
| 00:00 | 19:00 (-1 day) | Night |
| 01:00 | 20:00 (-1 day) | Night |
| 02:00 | 21:00 (-1 day) | Night |
| 03:00 | 22:00 (-1 day) | Night |
| 04:00 | 23:00 (-1 day) | Night |
| 05:00 | 00:00 | Night |
| 06:00 | 01:00 | |
| 07:00 | 02:00 | |
| 08:00 | 03:00 | |
| 09:00 | 04:00 | |
| 10:00 | 05:00 | |
| 11:00 | 06:00 | |
| 12:00 | 07:00 | |
| 13:00 | 08:00 | |
| 14:00 | 09:00 | Overlap |
| 15:00 | 10:00 | Overlap |
| 16:00 | 11:00 | Overlap |
| 17:00 | 12:00 | |
| 18:00 | 13:00 | |
| 19:00 | 14:00 | |
| 20:00 | 15:00 | |
| 21:00 | 16:00 | |
| 22:00 | 17:00 | Night |
| 23:00 | 18:00 | Night |
San Antonio is currently observing daylight saving time, while London is on standard time. When San Antonio switches back to standard time, the difference between these two cities will shift by 1 hour.
The time difference is 5 hours. San Antonio is 5 hours behind London.
Yes. One of these cities observes DST while the other does not, so the difference shifts by 1 hour when DST begins or ends.
The best window is between 14:00 and 17:00 London time, which corresponds to 09:00–12:00 in San Antonio. Both sides fall within normal business hours.
Subtract 5 hours from London time to get San Antonio time. Use the hour-by-hour table above for a quick reference.
For sunrise and sunset data, visit TheSunsetTimes.com. For detailed DST schedules, see DaylightSavingTime.info.