In astronomy, a tetrad is a set of four total lunar eclipses within two consecutive years. [1]
The frequency of tetrads varies by century with the frequency of total lunar eclipses. This repeating cycle is called a tetradia. See Eclipse cycle for more information.
Saros | Date Viewing |
Type Chart |
Saros | Date Viewing |
Type Chart | |
---|---|---|---|---|---|---|
1949–50 | ||||||
Descending node | Ascending node | |||||
121 |
1949 Apr 13 |
Total |
126 |
1949 Oct 07 |
Total | |
131 |
1950 Apr 02 |
Total |
136 |
1950 Sep 26 |
Total | |
1967–68 | ||||||
Descending node | Ascending node | |||||
121 |
1967 Apr 24 |
Total |
126 |
1967 Oct 18 |
Total | |
131 |
1968 Apr 13 |
Total |
136 |
1968 Oct 6 |
Total | |
1985–86 | ||||||
Descending node | Ascending node | |||||
121 |
1985 May 04 |
Total |
126 |
1985 Oct 28 |
Total | |
131 |
1986 Apr 24 |
Total |
136 |
1986 Oct 17 |
Total |
Saros | Date Viewing |
Type Chart |
Saros | Date Viewing |
Type Chart | |
---|---|---|---|---|---|---|
2003–04 | ||||||
Descending node | Ascending node | |||||
121 |
2003 May 16 |
total |
126 |
2003 Nov 09 |
total | |
131 |
2004 May 04 |
total |
136 |
2004 Oct 28 |
total | |
2014–15 | ||||||
Ascending node | Descending node | |||||
122 |
2014 Apr 15 |
Total |
127 |
2014 Oct 08 |
Total | |
132 |
2015 Apr 04 |
Total |
137 |
2015 Sep 28 |
Total | |
2032–33 | ||||||
Ascending node | Descending node | |||||
122 |
2032 Apr 25 |
Total |
127 |
2032 Oct 18 |
Total | |
132 |
2033 Apr 14 |
Total |
137 |
2033 Oct 08 |
Total | |
2043–44 | ||||||
Descending node | Ascending node | |||||
123 |
2043 Mar 25 |
Total |
128 |
2043 Sep 19 |
Total | |
133 |
2044 Mar 13 |
Total |
138 |
2044 Sep 07 |
Total | |
2050–51 | ||||||
Ascending node | Descending node | |||||
122 |
2050 May 06 |
Total |
127 |
2050 Oct 30 |
Total | |
132 |
2051 Apr 26 |
Total |
137 |
2051 Oct 19 |
Total |