In DateTime§

See primary documentation in context for method second.

method second(DateTime:D:)

Returns the second component, including potentially fractional seconds.

say DateTime.new('2012-02-29T12:34:56Z').second;     # OUTPUT: «56␤»
say DateTime.new('2012-02-29T12:34:56.789Z').second; # OUTPUT: «56.789␤»
say DateTime.new('2012-02-29T12:34:56,789Z').second; # comma also ok