Calendar Categories Astronomy Lunar Meteor Shower Solar System Terrestrial Agenda Agenda Day Month Week June – July 2019 Jun – Jul 2019 Collapse All Expand All Jun 18 Tue Mercury @ conj w/Mars (PM) Tickets Jun 18 @ 19:51 – 19:51 Sun sets : 1951 Mars sets : 2133 Mercury sets : 2135 Jun 21 Fri Summer solstice Tickets Jun 21 @ 10:54 – 10:54 Jun 30 Sun International Asteroid Day Tickets Jun 30 all-day Jul 7 Sun Delta Aquariids start Tickets Jul 7 all-day Shower peaks : 29 Jul @ 0100 Shower ends : 19 Aug Jul 9 Tue Saturn @ opposition Tickets Jul 9 @ 12:00 – 12:00 June – July 2019 Jun – Jul 2019