X days from Jan 28 - Calculate days

7 + February 04, 1961

10 + February 07, 1961

14 + February 11, 1961

21 + February 18, 1961

28 + February 25, 1961

30 + February 27, 1961

40 + March 09, 1961

45 + March 14, 1961

60 + March 29, 1961

90 + April 28, 1961

100 + May 08, 1961

120 + May 28, 1961

180 + July 27, 1961

200 + August 16, 1961

300 + November 24, 1961

7 - January 21, 1961

10 - January 18, 1961

14 - January 14, 1961

21 - January 07, 1961

28 - December 31, 1960

30 - December 29, 1960

40 - December 19, 1960

45 - December 14, 1960

60 - November 29, 1960

90 - October 30, 1960

100 - October 20, 1960

120 - September 30, 1960

180 - August 01, 1960

200 - July 12, 1960

300 - April 03, 1960