Aguascalientes runs on UTC−6 (CST) every day of the year, with no daylight saving time.
Aguascalientes and your time
Aguascalientes at a glance
| Country | Mexico |
|---|---|
| Region | Aguascalientes |
| Time zone | America/Mexico_City |
| Abbreviation now | CST |
| UTC offset now | UTC−6 |
| Daylight saving time | Not observed since 2022 |
| Coordinates | 21.88° N, 102.28° W |
Aguascalientes time zone and clock changes
Local time in Aguascalientes is UTC−6 year round, under the America/Mexico_City rules. Daylight saving time was used in the past, most recently in 2022, and no future change is scheduled.
Although Mexico has 4 different offsets, Aguascalientes keeps the same time as Mexico City.
Clock changes in Aguascalientes, 2026 and 2027
No clock changes are scheduled in Aguascalientes for 2026 or 2027.
Aguascalientes time compared with major cities
Take 9:00 AM in Aguascalientes: the clock reads 3:00 PM in London, 2:00 AM (next day) in Sydney and 7:00 AM in Los Angeles.
| City | Time now | Difference now | In January | In July | Shared office hours |
|---|---|---|---|---|---|
| New York (United States) | --:-- | 1 h ahead | 1 h ahead | 2 h ahead | 7 h |
| Los Angeles (United States) | --:-- | 2 h behind | 2 h behind | 1 h behind | 6 h |
| London (United Kingdom) | --:-- | 6 h ahead | 6 h ahead | 7 h ahead | 2 h |
| Paris (France) | --:-- | 7 h ahead | 7 h ahead | 8 h ahead | 1 h |
| Dubai (United Arab Emirates) | --:-- | 10 h ahead | 10 h ahead | 10 h ahead | None |
| Mumbai (India) | --:-- | 11 h 30 min ahead | 11 h 30 min ahead | 11 h 30 min ahead | None |
| Singapore | --:-- | 14 h ahead | 14 h ahead | 14 h ahead | None |
| Tokyo (Japan) | --:-- | 15 h ahead | 15 h ahead | 15 h ahead | None |
| Sydney (Australia) | --:-- | 17 h ahead | 17 h ahead | 16 h ahead | None |
| UTC | --:-- | 6 h ahead | 6 h ahead | 6 h ahead | 2 h |
Aguascalientes never changes its clocks, but many of these cities do. Where the January and July columns disagree, the gap shifts when the other city moves to or from daylight saving time.
Shared office hours is the part of a 9 AM to 5 PM local working day that both cities have in common. Weekends are not taken into account.
Sunrise and sunset in Aguascalientes
Today
| Sunrise | --:-- |
|---|---|
| Sunset | --:-- |
| Day length | -- |
| Solar noon | --:-- |
Being in the tropics, Aguascalientes sees little change in day length: the longest day (13 hours 28 minutes) is only 2 hours 40 minutes longer than the shortest (10 hours 48 minutes). Sunrise stays between 6:05 AM and 7:30 AM all year.
Daylight through the year in Aguascalientes
| Date | Sunrise | Sunset | Day length | |
|---|---|---|---|---|
| March equinox | March 20 | 6:53 AM | 7:00 PM | 12 h 7 min |
| June solstice | June 21 | 6:07 AM | 7:35 PM | 13 h 28 min |
| September equinox | September 22 | 6:38 AM | 6:45 PM | 12 h 7 min |
| December solstice | December 21 | 7:23 AM | 6:11 PM | 10 h 48 min |
Clock time and sun time in Aguascalientes
Aguascalientes sits well west of the centre of its time zone. On average the sun reaches its highest point at about 12:50 PM on standard time, not at 12:00. Mornings stay dark longer and evenings stay light later than the clock suggests.
Places close to Aguascalientes
All the places listed below keep the same time as Aguascalientes.
| City | Distance | Time now | Difference |
|---|---|---|---|
| Guadalupe | 99 km (62 mi) | --:-- | Same time |
| León | 105 km (65 mi) | --:-- | Same time |
| San Luis Potosí | 139 km (86 mi) | --:-- | Same time |
| Fresnillo | 156 km (97 mi) | --:-- | Same time |
| Irapuato | 166 km (103 mi) | --:-- | Same time |
| Zapopan | 172 km (107 mi) | --:-- | Same time |
| Salamanca | 184 km (115 mi) | --:-- | Same time |
| San Miguel de Allende | 192 km (120 mi) | --:-- | Same time |
Cities that share Aguascalientes’s time zone
These cities follow the same time zone rules as Aguascalientes.
Same time now, different rules
These places read the same time as Aguascalientes today but follow different rules, so they can drift apart when clocks change.
More cities in Mexico
All time zones and cities in Mexico
Tools for time in Aguascalientes
- Convert a time to or from Aguascalientes: pick a date and time and see it in every city on your list.
- Add Aguascalientes to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Aguascalientes and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What time zone is Aguascalientes in?
Aguascalientes uses the America/Mexico_City time zone, which is UTC−6 (CST) all year.
Does Aguascalientes use daylight saving time?
Not any more. Aguascalientes last changed its clocks for daylight saving time in 2022 and now stays on UTC−6 all year.
What is the time difference between Aguascalientes and London?
Aguascalientes is 6 hours behind London in January and 7 hours behind London in July, because London moves its clocks for daylight saving time and Aguascalientes does not.
Is Aguascalientes on the same time as Mexico City?
Yes. Aguascalientes and Mexico City both use UTC−6 right now.
How long is the longest day in Aguascalientes?
About 13 hours 28 minutes, around the June solstice. The shortest day, around the December solstice, has about 10 hours 48 minutes of daylight.
Why is the sun not highest at noon in Aguascalientes?
Clock time follows the time zone, not the sun. Aguascalientes lies west of the line its offset is based on, so solar noon comes at about 12:50 PM on standard time.
Time zone rules: IANA tz database, version 2026e. Place names and coordinates: GeoNames. Sunrise and sunset are calculated from the coordinates and can differ by a minute or two from local almanacs.