“The
total eclipse phase begins at 1:07 a.m. Tuesday, April 15. The moon will be
completely darkened by the Earth’s shadow from 1:46 to 2:25 a.m. Tuesday
morning and the eclipse will be finished at 3:33 a.m.”
From
1:07 to 2:25 AM, (the darkest time occurring at 1:46 a.m.) the moon will appear
dark red-orange. It will appear darkest at 1:46 AM.
Also,
while the conspicuous partial phase (with the moon missing a “bite”) ends at
3:33 AM, the moon will still be in the earth’s partial (penumbral) shadow for
the next hour, during which time it will appear slightly darker than normal
along its right edge, less so as it moves out of the penumbra, and will be
completely out of the penumbra by 4:39 AM (although most people won’t notice
anything unusual about its appearance after 4:00 AM or so, since the amount of
shading will be so slight).
Here’s
a graphic that may make it clearer. Note that all times are MDT, and the
moon moves from right to left over the course of the night:
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