T , [ NOAA NCEP CPC GSOD MONTHLY DCNTS month days ] Table

The full table is available here. Alternatively,the table is also available as tab-separated-value, R tab-separated-value, comma-separated-value, or LaTeX files.
timedays
months since 1960-01-01days
Jan 19790.0
Feb 19790.0
Mar 19790.0
Apr 19790.0
May 19790.0
Entries 1 to 5 of 216