Calendar Categories Astronomy Lunar Meteor Shower Solar System Terrestrial Agenda Agenda Day Month Week May – July 2019 May – Jul 2019 Collapse All Expand All May 11 Sat National Astronomy Day (Spring) Tickets May 11 all-day 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 17 Wed Perseids start Tickets Jul 17 all-day Shower peaks : 13 Aug Shower ends : 24 Aug May – July 2019 May – Jul 2019