What time is it in O'Fallon, Missouri?

O'Fallon is currently on daylight saving time. The next change is Sunday, November 1, 2026, when 2:00 am becomes 1:00 am local time.

O'Fallon sits at 38.78°N, 90.72°W. For sunrise and sunset there — which do depend on exactly where it is, unlike the clock — see sunrise and sunset in O'Fallon.

The clock says the same thing everywhere in Central Daylight Time, but the sun does not. Over O'Fallon it is highest at 12:54 pm today — 54 minutes after clock noon.

At 90.7°W, O'Fallon sits well toward the western edge of its zone, which is why the sun stays up later here than the clock suggests. Daylight saving adds another hour on top until the clocks change.

Today runs 12 hours 2 minutes in O'Fallon, and the day is getting shorter by 2 minutes a day. Across the year it swings 5 hours 26 minutes, from 14 hours 53 minutes at the June solstice down to 9 hours 27 minutes in December.

At 38.8°N that puts O'Fallon between Kailua at 2 hours 22 minutes and Fairbanks at 18 hours 9 minutes.