Moon, 10:00 PM EDT 18th • Mars 2° S. of Moon, 9:00 AM EDT 18th • 35th Anniversary of Charles Kowal's Discovery of minor planet Chiron (1977). 18th • 45th Anniversary of Venera 4 Landing on Venus (1967). 18th-20th • Conference: Solar System Exploration @50 , Washington DC. 20th • Mars