Documentation for method day assembled from the following pages:
Role: Dateish §
From Dateish
(Dateish) method day §
Defined as:
method day(Date: --> Int)Returns the day of the month of the date (1..31).
say Date.new('2015-12-31').day; # OUTPUT: «31» say DateTime.new(date => Date.new('2015-12-24'), hour => 1).day; # OUTPUT: «24»