class MiniDate

def is_between?(md_start, md_end)
  return true if (@month == md_start.month and @day >= md_start.day) ||
                 (@month == md_end.month and @day <= md_end.day)
  i = md_start.month + 1
  until i == md_end.month
    return true if @month == i
    i = (i+1) % 12
  end
  return false
end