old_contents: from django import template
  
  from datetime import datetime, time, timedelta
  
  register = template.Library()
  
  
  @register.simple_tag
  def height(start, end):
      if start.year == 2020 and int(start.strftime('%V')) >= 5 and start.hour == 12 and start.minute == 0:
          return '30'
      else:
          return '%d' % ((end - start).seconds / 60)
  
  
  @register.simple_tag
  def height_until(end):
      start = datetime.combine(end.date(), time(6, 0))
      return '%d' % ((end - start).seconds / 60)
  
  
  @register.simple_tag
  def height_since(start):
      if start.time() < time(23, 59):
          end = datetime.combine(start.date() + timedelta(days=1), time(6, 0))
      else:
          end = datetime.combine(start.date(), time(6, 0))
      return '%d' % ((end - start).seconds / 60)
  
new_contents: from django import template
  
  from datetime import datetime, time, timedelta
  
  register = template.Library()
  
  
  @register.simple_tag
  def height(start, end):
      if start.year == 2020 and int(start.strftime('%V')) >= 5 and start.hour == 12 and start.minute == 0:
          if end.minute == 5:
              return '30'
          return '%d' % (((end - start).seconds / 60) + 25)
      else:
          return '%d' % ((end - start).seconds / 60)
  
  
  @register.simple_tag
  def height_until(end):
      start = datetime.combine(end.date(), time(6, 0))
      return '%d' % ((end - start).seconds / 60)
  
  
  @register.simple_tag
  def height_since(start):
      if start.time() < time(23, 59):
          end = datetime.combine(start.date() + timedelta(days=1), time(6, 0))
      else:
          end = datetime.combine(start.date(), time(6, 0))
      return '%d' % ((end - start).seconds / 60)
  
subject: Add exception to to return extended height of the show