Current Time in O'Fallon, Missouri, USA

1:43:44 PM

13:43:44

CDT (Central Daylight Time) · UTC−05:00

America/Chicago

Clock format
Compare O'Fallon timeView O'Fallon on map
Time zone details

O'Fallon is observing daylight saving time in 2026

Daylight in O'Fallon

Sunrise7:21 AMSolar noon12:46 PMSunset6:11 PM
Next clock changeNov 1, 2026 · Clocks move back 1 hour · in 7 daysUpcomingView detailsWeather nowLoading current forecast…Forecast details

Location facts

Place

Country
USA
State
Missouri
Country currency
US Dollar (USD)

Practical

Country languages
English, Spanish, Hawaiian, French
Dialing code
+1
Population
85,040

Geography

Geographic coordinates
38° 48' N / 90° 41' W
View on map

Convert O'Fallon time

Compare O'Fallon with another city or time zone

O'Fallon follows the same clock and daylight-saving rules as Kansas City

Popular conversions (current offsets)

O'Fallon to EDTTarget time 1 hour aheadO'Fallon to MDTTarget time 1 hour behindO'Fallon to PDTTarget time 2 hours behindO'Fallon to AKDTTarget time 3 hours behindO'Fallon to HSTTarget time 5 hours behindO'Fallon to ADTTarget time 2 hours ahead

All times shown relative to O'Fallon local time

Clock changes in O'Fallon

Next clock change

Upcoming

2:00 AM CDT1:00 AM CST

Clocks move back 1 hour

2026

  1. past

    Daylight saving time starts

    2:00 AM CST3:00 AM CDT

    Clocks move forward 1 hour

  2. upcoming

    Daylight saving time ends

    2:00 AM CDT1:00 AM CST

    Clocks move back 1 hour

Future clock changes, 2027–2030
USA daylight saving timeClock changes worldwide

Sun & Moon details

Sun

Sunrise
Solar noon
Sunset
Daylight duration
10 hr 50 min2 min 21 sec shorter than the previous day

Twilight

Civil twilight
–
Nautical twilight
–
Astronomical twilight
–
Full MoonMoon illumination97%
View full Sun & Moon detailsHide full Sun & Moon details

Saturday, October 24, 2026

View O'Fallon on SavvyTime's time-zone map

Sun

Sunrise
Sunset
Day length
10 hr 50 min2 min 21 sec shorter than the previous day
Solar noon
(39.3° altitude)

Civil twilight

Dawn to dusk
–

Additional twilight

Nautical dawn to dusk
–
Astronomical dawn to dusk
–

Moon

Phase
Full Moon (97% illuminated)
Moonrise
Moonset
Previous principal phase
First Quarter — Sunday, October 18, 2026 at
Next principal phase
Full Moon — Sunday, October 25, 2026 at

Seven-day daylight outlook

Sunrise, sunset, and daylight for seven local dates
Local dateSunriseSunsetDay lengthDaily change
10 hr 50 min2 min 21 sec shorter than the previous day
10 hr 48 min2 min 20 sec shorter than the previous day
10 hr 46 min2 min 18 sec shorter than the previous day
10 hr 44 min2 min 18 sec shorter than the previous day
10 hr 41 min2 min 17 sec shorter than the previous day
10 hr 39 min2 min 16 sec shorter than the previous day
10 hr 37 min2 min 15 sec shorter than the previous day

Weather forecast for O'Fallon

Temperature unit

Loading weather forecast…

Plan around O'Fallon

Upcoming public holidays in Missouri

  1. Veterans Day
  2. Thanksgiving Day
  3. Christmas Day

Nearby places

Saint PetersSaint Charles County6 kmEWentzvilleSaint Charles County13 kmWSaint CharlesSaint Charles County19 kmEChesterfieldSaint Louis County20 kmSEWildwoodSaint Louis County26 kmSMaryland HeightsSaint Louis County26 kmSEBallwinSaint Louis County27 kmSEHazelwoodSaint Louis County29 kmEManchesterSaint Louis County29 kmSECreve CoeurSaint Louis County29 kmSEOverlandSaint Louis County32 kmEFlorissantSaint Louis County33 kmE
Browse places in USA

Frequently asked questions

What time zone is O'Fallon in?
O'Fallon uses Central Standard Time (CST, UTC−6) in winter and Central Daylight Time (CDT, UTC−5) in summer. Its IANA time zone is America/Chicago.
When is the next clock change in O'Fallon?
Clocks in O'Fallon move backward 1 hour on Sunday, November 1, 2026 at 2:00 AM, changing from CDT (UTC−05:00) to CST (UTC−06:00)
Does O'Fallon observe daylight saving time?
Yes. O'Fallon observes daylight saving time: CDT (UTC−5) in summer and CST (UTC−6) in winter.
What is the UTC offset of O'Fallon?
O'Fallon is UTC−6 in winter and UTC−5 in summer