Wherever we begin an anomalistic year the Earth will go through the complete cycle of its varying speeds while completing an ellipse back to the starting position. |
An anomalistic lunar month is the lunar equivalent to the solar anomalistic year which indicates the passage of the sun around the earth from perigee to perigee. |
There is also the anomalistic year, although this is even less used than the sidereal year. |
Thus, the Moon's distance from Earth is the same after a whole number of anomalistic months and very nearly the same after one saros. |
The progress of the Moon from one perigee to the next is known as the anomalistic lunar cycle and takes 27 days, 13 hours and 18 minutes. |
The saros period also comprises 238.992 anomalistic months, again nearly a whole number. |