node cycle Period of approximately 18.61 Julian years required for the regression of the Moon's nodes to complete a circuit of 360&#176; of longitude.
(approximately 18.61 Julian years; required; for the regression of the Moon's nodes; to complete a circuit of 360&#176; of longitude)
approximately 18.61 Julian years
required
for the regression of the Moon's nodes to complete a circuit of 360&#176 of longitude