Answer:
Lunar eclipses can last for anywhere from a few minutes to a maximum of 90 minutes. For this eclipse, here's the schedule.
The Moon is already half-eclipsed, so go out NOW to look.
Depending on your time zone, the total lunar eclipse will begin either every early the morning on Tuesday, December 21, or very late the evening of Monday, December 20.
In the table below, All times are in UCT, "Coordinated Universal Time" which used to be called Greenwich Mean Time. For the Eastern time zone, subtract 5 hours; for Central time, things happen 6 hours earlier. Mountain Time is 7 hours earlier, and subtract 8 hours for Pacific time.
Penumbral Eclipse Begins: ____05:29:17 UT
Partial Eclipse Begins: _______06:32:37 UT
Total Eclipse Begins: ________07:40:47 UT
Greatest Eclipse: ___________08:16:57 UT
Total Eclipse Ends: _________08:53:08 UT
Partial Eclipse Ends: ________10:01:20 UT
Penumbral Eclipse Ends: _____11:04:31 UT