Sunrise & Sunset in Union City, CA
Today's sun times for Union City, California — . All times are Union City 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 Union City's coordinates — accurate to a minute or two.
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Sunrise & sunset through the year
What time is sunrise in Union City, CA today?
The card above computes it live in your browser for today's date, using Union City's coordinates — along with sunset, solar noon, first light and last light, all in Union City'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.