$ jq -r -n -f Five_Weekends.jq
There are 201 months with 5 weekends from 1900 to 2100 inclusive;
the first and last five are as follows:
Mar 1901
Aug 1902
May 1903
Jan 1904
Jul 1904
...
Mar 2097
Aug 2098
May 2099
Jan 2100
Oct 2100
In this period, there are 29 years which have no five-weekend months.