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Calendar Date Day of the week Astronomy phenomenon
09/01 Friday Comet 145P/Shoemaker-Levy Perihelion﹔α-Aurigids Meteor Shower Peak
09/02 Saturday Mars in conjunction with Mercury
09/03 Sunday
09/04 Monday
09/05 Tuesday Neptuner at opposition
09/06 Wednesday Neptune in conjunction with Moon﹔Full Moon
09/07 Thursday Comet PanSTARRS (2016 T3) Perihelion
09/08 Friday
09/09 Saturday Uranus in conjunction with Moon﹔September ε-Perseids Meteor Shower Peak
09/10 Sunday Comet Schwartz (2014 B1) Perihelion
09/11 Monday
09/12 Tuesday Mercury at greatest western elongation
09/13 Wednesday Last Quarter
09/14 Thursday Moon at perigee
09/15 Friday
09/16 Saturday Comet MASTER (2016 N4) Perihelion
09/17 Sunday Mars in conjunction with Mercury﹔Comet P/Vales (2010 H2) Perihelion
09/18 Monday Venus in conjunction with Moon
09/19 Tuesday Mars in conjunction with Moon﹔Mercury in conjunction with Moon﹔Comet 5D/Brorsen Perihelion
09/20 Wednesday New Moon
09/21 Thursday
09/22 Friday Jupiter in conjunction with Moon
09/23 Saturday
09/24 Sunday Comet 213P/Van Ness Perihelion
09/25 Monday
09/26 Tuesday
09/27 Wednesday Saturn in conjunction with Moon﹔Moon at apogee
09/28 Thursday First Quarter
09/29 Friday
09/30 Saturday Comet 263P/Gibbs Perihelion