# Astronomy, Vedic [[sb/4/29/69#purport|SB 4.29.69]], [[sb/4/29/80#purport|SB 4.29.80]], [[sb/4/30/5#purport|SB 4.30.5]], [[sb/4/31/16#purport|SB 4.31.16]] * calendar according to, [[sb/3/21/18#purport|SB 3.21.18]] * compared with Western, [[sb/4/29/42-44#purport|SB 4.29.42-44]] * planetary systems, [[sb/4/29/28#purport|SB 4.29.28]] *See also:* Planets; Universes *See:* Planets; material; Universe