1 April 1, 1980
2 April 2, 1980
3 April 3, 1980
4 April 4, 1980
5 April 5, 1980
6 April 6, 1980
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8 April 8, 1980
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10 April 10, 1980
11 April 11, 1980
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14 April 14, 1980
15 April 15, 1980
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20 April 20, 1980
21 April 21, 1980
22 April 22, 1980
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27 April 27, 1980
28 April 28, 1980
29 April 29, 1980
30 April 30, 1980
