Originally posted by CherubBaby
reply to post by Phage
The next time they decide to cut down on the trails in the sky. I will get you a few.
According to the math, you will not see it perfectly
horizontal in the U.S., but maybe a little farter south across to border into Mexico.
According to the Old Farmer's Almanac, the best time to see an "almost" horizontal Moon in the southern U.S. will differ depending on the phase:
- A very "young" Moon (the thinnest waxing
crescent) will be most horizontal in the spring (March, April, and May). This phase (by
definition) will be seen close behind the setting sun -- so you will see it best right after sunset.
- A very "old" Moon (the thinnest waning
crescent) will be most horizontal during the fall (September, October, and November). This phase
(by definition) will be seen close ahead of the rising sun -- so you will see it best immediately before sunrise.
- The last quarter Moon (similar to the photo you took from Las Vegas on November 4) will be the most noticeably tilted in the winter,but most
noticeable at Moon-set
. That's because it sets late at night, but rises during the daylight hours. So most people only notice it if they are
out late at night or after midnight.
- The first quarter Moon (similar to the photo you took from Las Vegas on November 19) will also be the most noticeably tilted in the winter, but
most noticeable at Moon-rise
. That;s because it rises in the early morning (while it is dark), but sets during the daylight hours. So mot
people only notice it if they are out at pre-dawn.
Those are your best times of the year/day to see the various phases of the Moon look most tilted toward the horizontal in the United States. The
further south you are, the more tilted it will look.
However, that's not always true for the entire Northern Hemisphere. You can go "too far" south and see a less
tilted Moon. For example,
the last quarter Moon we has last week (December 2) was more
horizontal-looking when seen at night from 20° North of the equator than it was
from the equator itself. This is due to the tilt of the Earth.
In fact, it would have looked more tilted from Las Vegas on that day(ooking somewhere around 16° from being horizontal, with the right side higher
than the left side) than it would have from the equator, where it would have looked about 20° away from being horizontal (with the left side higher
than the right).