d.month â fixnum Instance Public methods Returns the month (1-12). Date.new(2001,2,3).mon #=> 2

d.new_start([start=Date::ITALY]) â date Instance Public methods Duplicates self and resets its the day of calendar reform. d = Date.new(1582,10,15) d.new_start(Date::JULIAN) #=> #<Date: 1582-10-05 ...>

d.next â date Instance Public methods Returns a date object denoting the following day.

d.next_day([n=1]) â date Instance Public methods This method is equivalent to d + n.

d.next_month([n=1]) â date Instance Public methods This method is equivalent to d >> n

d.next_year([n=1]) â date Instance Public methods This method is equivalent to d >> (n * 12)

d.prev_day([n=1]) â date Instance Public methods This method is equivalent to d - n.

d.prev_month([n=1]) â date Instance Public methods This method is equivalent to d << n

d.prev_year([n=1]) â date Instance Public methods This method is equivalent to d << (n * 12)

d.rfc2822 â stringd.rfc822 â string Instance Public methods This method is equivalent to strftime('%a, %-d %b %Y %T %z').