When you go out every night and watch the moon, you may learn something. What??? Here are some of my recent observations.
The transit time of the Moon changes everyday. The length of time from moonrise to moonset at 28N .
On Nov.27 the transit time was 12h 6 min.
28 12h 39 min
29 12h 51m
30 13h 9m
Dec 1 13h 23m
2 FULL MOON 13h 48m
3 13h 27m
4 13h 15m
Now what does that tell you?( No, I'm not nuts <G>)
It tells me that the full moon likely occurs when the transit time from moonrise to moonset is the longest. But I will have to watch this to confirm that idea.
I was able to record the latitudinal position of the moon on Nov.27,28,29,30. by recording the length of a shadow cast by a pole as the moon passed my longitude. It was a struggle on Dec.1. High thin overcast with vague shadows at times.
Dec2 the full moon. The sky was totally overcast and raining at the appointed hour.
Dec 3, I caught a slight break in the cloud cover 15 minutes before the moon passed directly south and I got a ghost of a shadow. The best I could do. Estimate moon above 24.67 N.
Dec 4 was totally overcast and it rained continuously all day. Totally overcast today.
The moon reaches its highest point in the sky sometime around 21 Dec each year. I wanted to get that reading but I was socked in. The next full moon is Dec31.
The moon has a long cycle of 18.6 yrs. Achieving its highest point in the sky. 9.3 yrs later its lowest point in the sky.
The ancient peoples of Chaco Canyon knew about this cycle and set up observation points. Other ancient cultures apparently knew about it also.
Think of all the observations necessary to arrive at that level of understanding. You have a theory based on observations. then you have to run thru a few complete cycles to verify your theory. Any one person could be 100 yrs old by the time he could state with certainty that the moon had a long cycle.
Of course the moon runs thru short cycles twice each year when you see it very high in the sky and other times it is very low at its highest point during the transit.
But to catch that 18.6 year long cycle, that's amazing.
The Spring Hill Night Stalker