Calendar Categories Astronomy Lunar Meteor Shower Solar System Terrestrial Month Agenda Day Month Week 2018 Aug September 2019 Oct 2020 Sun Mon Tue Wed Thu Fri Sat 1 2 3 4 5 6 7 8 9 10 Neptune @ opposition 02:00 Neptune @ opposition Sep 10 @ 02:00 – 02:00 Tickets 11 12 13 14 15 16 17 18 19 20 21 22 23 Autumnal Equinox 02:50 Autumnal Equinox Sep 23 @ 02:50 – 02:50 Tickets 24 25 26 27 28 29 30 2018 Aug September 2019 Oct 2020