View Full Version here: : Moon Phase
Hans Tucker
20-08-2015, 08:03 PM
Noticing the Moon transiting through it's waxing phase and thought something odd..I am accustomed to seeing the phase going from right to left or left to right but notice the phasing starting with the crescent starting from the bottom...if I have described this correctly. Is this normal...have I been inattentive till now :question:
Somnium
21-08-2015, 08:46 AM
The crescent will always be in line with the sun, after a new moon it can look like a ceschire cat moon because it sets shortly after the sun so in the afternoon sky the sun will be lighting it up from the "bottom"
Because the Moon's orbit is not in the ecliptic plane (we'd see solar and lunar eclipses every month if that was the case), the Moon varies in declination and therefore also in inclination of its apparent crescent relative to the ecliptic. At times, this can result in unusually steep or shallow angles between the lunar crescent's apparent orientation and your local horizon, at a given phase. The crescent will be "lying on its back" or be more upright to an extent that will vary from one lunation to another.
https://en.wikipedia.org/wiki/Lunar_standstill
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