If the clouds stay away, you'll be able to see a total lunar eclipse in the wee hours of Tuesday (Dec. 21).
Lunar eclipses occur when the moon is full and passes directly behind the earth and sunlight is blocked. The earth's shadow will begin covering the moon at 12:33 a.m. Tuesday. The total eclipse begins at 1:41 a.m. Mid-eclipse will be at 2:17 a.m., and the total eclipse will end at 2:53 a.m. THe remaining partial eclipse will end at 4:01 a.m.
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