Hermosillo runs on UTC−7 (MST) every day of the year, with no daylight saving time.
Hermosillo and your time
Hermosillo at a glance
| Country | Mexico |
|---|---|
| Region | Sonora |
| Time zone | America/Hermosillo |
| Abbreviation now | MST |
| UTC offset now | UTC−7 |
| Daylight saving time | Not observed since 1998 |
| Coordinates | 29.09° N, 110.97° W |
Hermosillo time zone and clock changes
The clocks in Hermosillo follow America/Hermosillo and do not move with the seasons. The last daylight saving period here was in 1998. Since then the offset has stayed at UTC−7.
Watch out when booking with the capital: Mexico City is 1 hour ahead of Hermosillo, because Mexico spans 4 offsets.
Clock changes in Hermosillo, 2026 and 2027
No clock changes are scheduled in Hermosillo for 2026 or 2027.
How far ahead or behind Hermosillo is
Take 9:00 AM in Hermosillo: the clock reads 4:00 PM in London, 3:00 AM (next day) in Sydney and 8:00 AM in Los Angeles.
| City | Time now | Difference now | In January | In July | Shared office hours |
|---|---|---|---|---|---|
| Mexico City | --:-- | 1 h ahead | 1 h ahead | 1 h ahead | 7 h |
| New York (United States) | --:-- | 2 h ahead | 2 h ahead | 3 h ahead | 6 h |
| Los Angeles (United States) | --:-- | 1 h behind | 1 h behind | Same time | 7 h |
| London (United Kingdom) | --:-- | 7 h ahead | 7 h ahead | 8 h ahead | 1 h |
| Paris (France) | --:-- | 8 h ahead | 8 h ahead | 9 h ahead | None |
| Dubai (United Arab Emirates) | --:-- | 11 h ahead | 11 h ahead | 11 h ahead | None |
| Mumbai (India) | --:-- | 12 h 30 min ahead | 12 h 30 min ahead | 12 h 30 min ahead | None |
| Singapore | --:-- | 15 h ahead | 15 h ahead | 15 h ahead | None |
| Tokyo (Japan) | --:-- | 16 h ahead | 16 h ahead | 16 h ahead | None |
| Sydney (Australia) | --:-- | 18 h ahead | 18 h ahead | 17 h ahead | None |
| UTC | --:-- | 7 h ahead | 7 h ahead | 7 h ahead | 1 h |
Because Hermosillo keeps one offset all year, any change in the gap comes from the other city’s daylight saving time. Compare the January and July columns.
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.
Daylight in Hermosillo
Today
| Sunrise | --:-- |
|---|---|
| Sunset | --:-- |
| Day length | -- |
| Solar noon | --:-- |
Over the year, daylight in Hermosillo grows from 10 hours 17 minutes to 14 hours and back, a swing of 3 hours 43 minutes.
Daylight through the year in Hermosillo
| Date | Sunrise | Sunset | Day length | |
|---|---|---|---|---|
| March equinox | March 20 | 6:28 AM | 6:35 PM | 12 h 8 min |
| June solstice | June 21 | 5:26 AM | 7:26 PM | 14 h |
| September equinox | September 22 | 6:12 AM | 6:20 PM | 12 h 8 min |
| December solstice | December 21 | 7:14 AM | 5:31 PM | 10 h 17 min |
When the sun is highest in Hermosillo
Clock time and sun time line up fairly well in Hermosillo: solar noon falls at about 12:25 PM on standard time.
Cities near Hermosillo
Every city below shares Hermosillo’s clock.
| City | Distance | Time now | Difference |
|---|---|---|---|
| Guaymas | 130 km (81 mi) | --:-- | Same time |
| Ciudad Obregón | 205 km (127 mi) | --:-- | Same time |
| Nogales | 247 km (153 mi) | --:-- | Same time |
| Navojoa | 270 km (168 mi) | --:-- | Same time |
Same time now, different rules
These places read the same time as Hermosillo today but follow different rules, so they can drift apart when clocks change.
More cities in Mexico
All time zones and cities in Mexico
Plan around the time in Hermosillo
- Convert a time to or from Hermosillo: pick a date and time and see it in every city on your list.
- Add Hermosillo to your world clock to keep it next to your own time.
- Find a meeting time that falls inside office hours in Hermosillo and the other cities you work with.
- Open a full-screen clock for your own time zone.
Frequently asked questions
What time zone is Hermosillo in?
Hermosillo uses the America/Hermosillo time zone, which is UTC−7 (MST) all year.
Does Hermosillo use daylight saving time?
Not any more. Hermosillo last changed its clocks for daylight saving time in 1998 and now stays on UTC−7 all year.
What is the time difference between Hermosillo and London?
Hermosillo is 7 hours behind London in January and 8 hours behind London in July, because London moves its clocks for daylight saving time and Hermosillo does not.
Is Hermosillo on the same time as Mexico City?
No. Mexico City is 1 hour ahead of Hermosillo, because Mexico uses more than one offset.
How long is the longest day in Hermosillo?
About 14 hours, around the June solstice. The shortest day, around the December solstice, has about 10 hours 17 minutes of daylight.
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.