X days from Dec 23 - Calculate days

7 + December 30, 1961

10 + January 02, 1962

14 + January 06, 1962

21 + January 13, 1962

28 + January 20, 1962

30 + January 22, 1962

40 + February 01, 1962

45 + February 06, 1962

60 + February 21, 1962

90 + March 23, 1962

100 + April 02, 1962

120 + April 22, 1962

180 + June 21, 1962

200 + July 11, 1962

300 + October 19, 1962

7 - December 16, 1961

10 - December 13, 1961

14 - December 09, 1961

21 - December 02, 1961

28 - November 25, 1961

30 - November 23, 1961

40 - November 13, 1961

45 - November 08, 1961

60 - October 24, 1961

90 - September 24, 1961

100 - September 14, 1961

120 - August 25, 1961

180 - June 26, 1961

200 - June 06, 1961

300 - February 26, 1961