( a·NOM·a·lis·tic month). An anomalistic month is the time that the moon takes to go from perigee (the point nearest to the earth in the orbit of the moon) to perigee.
The time required for the Moon to move around its orbit, from perigee to perigee.
period between successive perigees; approximately 27.5546 days
A time interval between successive perigee passages of the moon.
The time it takes for the Moon to travel from apogee to perigee and back again (about 27.6 days).