21 events between July 22, 1971 and July 22, 2047 July 21–22 May 9–11 February 26–27 December 14–15 October 2–3 106 108 110 112 114 July 21, 1952 May 10, 1956 February 26, 1960 December 16, 1963 October 3, 1967 116 118 120 122 124 July 22, 1971 May 11, 1975 February 26, 1979 December 15, 1982 October 3, 1986 126 128 130 132 134 July 22, 1990 May 10, 1994 February 26, 1998 December 14, 2001 October 3, 2005 136 138 140 142 144 July 22, 2009 May 10, 2013 February 26, 2017 December 14, 2020 October 2, 2024 146 148 150 152 154 July 22, 2028 May 9, 2032 February 27, 2036 December 15, 2039 October 3, 2043 156 July 22, 2047