Simple extension of Fixnum to help with manipulating dates and times.

Fixnum_DateTime_Extensions.rb

class Fixnum
  def seconds
    self
  end
  def minutes
    self * 60
  end
  def hours
    self * 60 * 60
  end
  def days
    self * 60 * 60 * 24
  end
  def years
    self * 60 * 60 * 24 * 365
  end
end