I don't think it matters. The whole eclipse cycle will influence the entire 24-hours since the previous moon-set of the day before. If you feel you need to be that precise & can time it & still function ritually within the eclipse itself, go for it. Otherwise - depending on whether your goal is attracting or releasing, just casting completely within the 12-hour period
prior to totality for the
waxing effect OR the 12-hrs
after totality for
waning effect might be a workable option. In my area it has been consistently overcast & I don't expect any viewing to be possible. Making eclipse moon water is about my speed...a whole month of moon in a bottle.
On a full moon date the moon rises as the sun sets, and will reach zenith around midnight, give or take an hour for Daylight Saving Time.
My antiquated iPad couldn't open the link FBF, so I found this & I'll put it here:
January 21: Super Blood Wolf Moon Eclipse
On Jan. 21, people in North America, South America, Greenland, Iceland and more will be able to view a lunar eclipse that some are calling the “Super Blood Wolf Moon Eclipse.”
The astronomical event, a simultaneous total lunar eclipse and a “supermoon,” will take place on the night of Jan. 20 into the morning of Jan. 21. During the event, the moon will fall completely into Earth’s shadow, and appear red-colored and slightly larger than usual for about an hour.
The Super Blood Wolf Moon Eclipse will be the last total lunar eclipse until 2021.