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1970
Jan 15

April 26

July 1

Sept 14

Oct 25

Dec 17
1971
Feb 1
 

April 25
 

June 11
 

Sept 13
 

Oct 31
 

Dec 16
 
1972
Feb 1
 

April 30
 

June 1
 

July 1
 

Sept 11

Oct 29
 

Dec 14
 
1973
Jan 31
 

April 1

April 29

June 1

Sept 10

Oct 28

Dec 1
1974
March 2

May 1

July 1

Sept 9

Sept 9

Oct 27
1975
Jan 7

Jan 31

March 2

May 1

June 13

Sept 3

Oct 26
1976
March 2

May 3

June 11

Sept 8

Oct 31

Dec 16
1977
Jan 5

April 24

June 10

Sept 7

Oct 30

Dec 15
1978
Jan 4

Jan 31

April 11

April 30

June 9

Sept 6

Oct 29
1979
Jan 9

April 2

Aug 1

Sept 5

Oct 28

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Updated April 1, 2025
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