# File lib/facets/core/time/self/days_extrema.rb, line 16
def Time.days_extrema(time1, time2=nil)
  time2 = time1 if (not time2.valid? Time)
  time2 = NEVER if (time2 <= time1)
  start_time = Time.self.start_of_day(time1)
  end_time = self.end_of_day(time2)
  return (start_time..end_time)
end