Table 1.

Periods of revolution of the sun and moon contributing to the timing of tidal forcing

Name	Period, days
Synodic month	29.530589	Ref. 5, p. 126
Anomalistic month	27.554551	Ref. 5, p. 131
Nodical month	27.212220	Ref. 5, p. 126
Tropical year*	365.24219879	Ref. 5, p. 125
Anomalistic year	365.25964134	Ref. 5, p. 125

*Same as “year” in text, equal to the average calendar year.