old_contents: import datetime
  def get_default_time_display(dt, show_timezone=True):
      """
      Converts a datetime to a string representation. This is the default
      representation used in Studio and LMS.
      It is of the form "Apr 09, 2013 at 16:00" or "Apr 09, 2013 at 16:00 UTC",
      depending on the value of show_timezone.
  
      If None is passed in for dt, an empty string will be returned.
      The default value of show_timezone is True.
      """
      if dt is None:
          return ""
      timezone = ""
      if dt is not None and show_timezone:
          if dt.tzinfo is not None:
              try:
                  timezone = " " + dt.tzinfo.tzname(dt)
              except NotImplementedError:
                  timezone = dt.strftime('%z')
          else:
              timezone = " UTC"
      return dt.strftime("%b %d, %Y at %H:%M") + timezone
  
  
  def almost_same_datetime(dt1, dt2, allowed_delta=datetime.timedelta(minutes=1)):
      """
      Returns true if these are w/in a minute of each other. (in case secs saved to db
      or timezone aren't same)
  
      :param dt1:
      :param dt2:
      """
      return abs(dt1 - dt2) < allowed_delta
  
new_contents: import datetime
  def get_default_time_display(dt, show_timezone=True):
      """
      Converts a datetime to a string representation. This is the default
      representation used in Studio and LMS.
      It is of the form "Apr 09, 2013 at 16:00" or "Apr 09, 2013 at 16:00 UTC",
      depending on the value of show_timezone.
  
      If None is passed in for dt, an empty string will be returned.
      The default value of show_timezone is True.
      """
      if dt is None:
          return ""
      timezone = ""
      if show_timezone:
          if dt.tzinfo is not None:
              try:
                  timezone = " " + dt.tzinfo.tzname(dt)
              except NotImplementedError:
                  timezone = dt.strftime('%z')
          else:
              timezone = " UTC"
      return dt.strftime("%b %d, %Y at %H:%M") + timezone
  
  
  def almost_same_datetime(dt1, dt2, allowed_delta=datetime.timedelta(minutes=1)):
      """
      Returns true if these are w/in a minute of each other. (in case secs saved to db
      or timezone aren't same)
  
      :param dt1:
      :param dt2:
      """
      return abs(dt1 - dt2) < allowed_delta
  
subject: Remove extraneous test for already handled edge case