Sunrise & Sunset in O'Fallon, MO
Today's sun times for O'Fallon, Missouri — . All times are O'Fallon local time (its own time zone), computed live in your browser for today.
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First/last light = civil twilight (sun <6° below the horizon), from O'Fallon's coordinates — accurate to a minute or two.
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Sunrise & sunset through the year
What time is sunrise in O'Fallon, MO today?
The card above computes it live in your browser for today's date, using O'Fallon's coordinates — along with sunset, solar noon, first light and last light, all in O'Fallon's own time zone.
What are first light and last light?
Civil twilight — when the sun is less than 6° below the horizon. It's bright enough for most outdoor activities before sunrise and after sunset.
Why do the times change every day?
Earth's tilted axis means the sun's path moves through the seasons — days lengthen toward the summer solstice and shorten toward the winter solstice, so sunrise and sunset shift a little every day.