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Sunday, April 10, 2011

Moon Calculator - Apogees and Perigees, New and Full Moons

Lunar Apogee and Perigee Calculator for finding out dates/times for New and Full Moons and also Apogee/Perigee of Moon for each year. Astropro provides Supermoons for 20th and 21st Century, but this is great for going back farther in time.

SuperMoons are Perigee (closest to earth) - Syzygy (New or Full Moons). No matter how much I try to remember that it doesn't seem to stick in my noodle.

Apogee and Perigee Lunar Calculator


From Wikipedia article about Ebbtides (Diurnal tides)

The changing distance separating the Moon and Earth also affects tide heights. When the Moon is at perigee, the range increases, and when it is at apogee, the range shrinks. Every 7½ lunations (the full cycles from full moon to new to full), perigee coincides with either a new or full moon causing perigean spring tides with the largest tidal range. If a storm happens to be moving onshore at this time, the consequences (property damage, etc.) can be severe.

Dark Moon Lilith is calculated from the Apogee, or from the long line of space which leads to the apogee on the elliptical orbit that the moon travels around the earth. Don't quote me on this. But, doesn't it makes sense that Lilith would represent the shrunken tides. She one p'o'd lady.

There are interesting phenomena called Neap and Spring Tides which affect the flow of the oceans. These are connected with the times between the Quarter Moons and the New and Full Moons. http://en.wikipedia.org/wiki/Ebb_tide.

I tried to figure out how to read the tables in order to figure out whether there was a SuperMoon at the time that the song EbbTide was brought out. Don't know if I'm correct here but I believe that there was a SuperMoon on Sept. 23, 1953 at 4:16 am (GreenwichT?). The Full Moon was about 20 or 30 minutes apart and this was also a Fall Solstice. There were significant outer planet configurations as Saturn and Neptune were in conjunction in Libra squaring Uranus in Cancer and trining Jupiter in Gemini. The Wikipedia entry for Sept. 1953 has the shortest list of events for this month for the whole year. There was a deadly hurricane on Sept. 25 which killed 1000 people. Can't remember where. China was rejected from the United Nations. That's pretty significant. I guess this was the McCarthy era. That's one tide that was best left to Ebb its way on out.

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