Beyond that, the cycle of the phases of the Moon defines a 'lunar month' of some 29&#189; days, while the cycle of the seasons defines a 'solar year' of some 365&#188; days, and these round out the astronomical factors which have shaped our various calendars.
(the cycle of the phases of the Moon; defines; a 'lunar month' of some 29&#189; T:Beyond that) (the cycle of the seasons; defines; a 'solar year' of some 365&#188; days, and these round out the astronomical factors) (the astronomical factors; have shaped; our various calendars)
the cycle of the phases of the Moon the cycle of the seasons the astronomical factors
defines defines have shaped
a 'lunar month' of some 29&#189 T:Beyond that
a 'solar year' of some 365&#188 days, and these round out the astronomical factors
our various calendars