lunar-perigee

We will use the more accurate values for The Revolution Periods of The Lunar Perigee and Lunar Node, according to The Astronomical Almanac for 1981, page D2. It states that The Lunar Perigee moves 0.11140362 degrees per day, which gives a value for The Lunar Perigee’s Revolution period of exactly

3231.492837 Earth days.

According to The Astronomical Almanac for 1981, page D2, The Lunar Node moves 0.05295383 degrees per day, which gives a value for The Lunar Node’s Revolution period of exactly

6798.375113 Earth days.

These periods are calculated in the following manner:-

The revolution period of The Lunar Perigee =

(360 ÷ 0.11140362) = 3231.492837 Earth days

and The revolution period of The Lunar Node =

(360 ÷ 0.05295383) = 6798.375113 Earth days

To verify these two values, here is a scan from the above data source.