Upper Alton time zone
Time zone14 Mar 2027 - clocks go forward 1 h to CDT (UTC-5) - in 124 days
Green shows daylight saving time. Dark marker: today.
United States has 8 distinct time zone rule groups. Upper Alton uses Central Standard Time.
- EST · UTC-5New York, Pennsylvania, Florida, Ohio, North Carolina and moreUses daylight saving time
- CST · UTC-6Illinois, Texas, Tennessee, Oklahoma, Wisconsin and moreUses daylight saving time
- MST · UTC-7Colorado, Texas, New Mexico, Idaho, Utah and moreUses daylight saving time
- MST · UTC-7ArizonaNo daylight saving time
- PST · UTC-8California, Washington, Oregon, Nevada, IdahoUses daylight saving time
- UTC-9 · UTC-9AlaskaUses daylight saving time
- UTC-10 · UTC-10America/AdakUses daylight saving time
- UTC-10 · UTC-10HawaiiNo daylight saving time
Zones with matching offsets and clock changes over the next year are grouped together.
Time difference from Upper Alton
Time differenceSun in Upper Alton today
Daylight10h 13m today - 4h 41m less than the longest day and 0h 47m more than the shortest day.
Calculated from coordinates; sunrise and sunset are approximate.
About Upper Alton
City facts- ⌖Region
- Illinois
- ◉Population
- 29,251
- ☎Dialing code
- ¤Currency
- USD · Dollar
Public holidays in Illinois
HolidaysVeterans Day
Wednesday · in 1 days
NationalThanksgiving Day
Thursday · in 16 days
NationalChristmas Day
Friday · in 45 days
Nationallong weekendNew Year’s Day
Friday · in 52 days
Nationallong weekendMartin Luther King Jr. Day
Monday · in 69 days
Nationallong weekend
Airports near Upper Alton
Airports- STL
↑ 26 km south-west
Same local time - SUS
↑ 52 km south-west
Same local time
Same time zone rules
Matching offsets and clock changes over the next year.
Same UTC offset right now
Pueblamatches until 14 Mar 2027
Columbus625 km · 1 h ahead - different daylight saving rules 
Toronto1043 km · 1 h ahead - different daylight saving rules
Common questions
Quick answers- 01What time zone is Upper Alton in?
- Upper Alton uses America/Chicago: CST (UTC-6).
- 02Does Upper Alton have daylight saving time?
- 14 Mar 2027 - clocks go forward 1 h to CDT (UTC-5) - in 124 days
- 03What is the time difference between Upper Alton and London?
- Upper Alton is 6 h behind relative to London right now.
- 04What is a good time to call Upper Alton from New York?
- A shared working-hours option: 16:00-17:00 in New York = 15:00-16:00 in Upper Alton.
Time zones: IANA via Intl. Holidays: date-holidays. Sun calculations: SunCalc. City data: GeoNames. Airport data: OurAirports.
