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Maintenance Ruby 3.3 gets fixes, but no new features. Switch to Ruby 4.0 →

instance method

Date#mon

mon → integer

Returns the month in range (1..12):

Example
Date.new(2001, 2, 3).mon # => 2
See also #mjd #monday? #mday #month also in 4.1 · 4.0 · 3.4 · 3.2 · 3.1 · 3.0