Calendar Categories Astronomy Lunar Meteor Shower Solar System Terrestrial Agenda Agenda Day Month Week June – September 2019 Jun – Sep 2019 Collapse All Expand All Jun 30 Sun International Asteroid Day Tickets Jun 30 all-day Jul 9 Tue Saturn @ opposition Tickets Jul 9 @ 12:00 – 12:00 Aug 24 Sat Venus @ conj w/Mars (PM) Tickets Aug 24 @ 19:18 – 19:18 Sun sets : 1918 Mars sets : 1929 Venus sets : 1931 Sep 10 Tue Neptune @ opposition Tickets Sep 10 @ 02:00 – 02:00 Sep 23 Mon Autumnal Equinox Tickets Sep 23 @ 02:50 – 02:50 June – September 2019 Jun – Sep 2019