Earth Moon System and 27 x 27 Number Square. The **barycenter** is the center of mass of two or more bodies that are orbiting each other. Earth and Moon have a shared barycenter. As such they are a dual planetary system. Barycenters are an important concept astronomy and astrophysics. This is the case for the Earth–Moon system. The barycenter is located on average 2,902 mi from the Earth’s center. This is well within the planet’s radius of 3,963 miles.

### phases of the Moon Archives – DSO Works

What do things have in common? That was the definition of wisdom in antiquity. Look at the internal link just above. Above, this Moon link applies to our four types of musical triads.

### Earth Moon system and the 27 x 27 number square

Four Hundred Fortieth Post Defines Genesis You might want to review the previous post. My current post (441) is simply a continuation. The common Earth based system for both is implied on the 27 x 27 number square. Here’s how:

- Look at the core number of this number square. It is numbered three hundred and sixty-five. That defines the days of our solar year. Its core is the essence of any number square.
- Look at the white diagonal from #352 to #378. Each each lunation is approximately 29
^{1}⁄_{2}days (29 days, 12 hours, 44 minutes, 3 seconds, or 29.530588 days). It is common for the months of a lunar calendar to alternate between 29 and 30 days. There are twelve such lunations.**The Lunar year is**is therefore 354 days, 8 hours, 48 minutes, 34 seconds (354.367056 days). Both 354 and 355 are included in this same diagonal.

Both the timing of the the Earth and Moon are found the the aforementioned diagonal line. The Earth is the main and central planet. The Moon has its center of gravity on the same diagonal. Likewise, Moon is part of the 365 day Earth based system.

At one time civilization was structured by number squares. It was a time of peace and prosperity. Does that describe the legend of Atlantis? Plato describes in Critias what his grandfather was told by King Solon. Solon heard the story from the Egyptians. Atlantis was a mighty power based on an island in the Atlantic Ocean. Perhaps, over time, they also lost their interaction with number squares? Many blogs on DSOworks.com cover number square mathematics.