old_contents: import os
  from celery import Celery
  from celery.schedules import crontab
  
  os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'lims.settings')
  
  app = Celery('lims', broker='redis://localhost', backend='redis')
  app.config_from_object('django.conf:settings', namespace='CELERY')
  app.autodiscover_tasks()
  
  app.conf.beat_schedule = {
      'process-deadlines': {
          'task': 'lims.projects.tasks.process_deadlines',
          'schedule': crontab(minute=0, hour='*/3'),
      }
  }
  
new_contents: import os
  from celery import Celery
  from celery.schedules import crontab
  
  os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'lims.settings')
  
  app = Celery('lims', broker=os.environ.get('REDIS_URL', 'redis://127.0.0.1:6379'), backend='redis')
  app.config_from_object('django.conf:settings', namespace='CELERY')
  app.autodiscover_tasks()
  
  app.conf.beat_schedule = {
      'process-deadlines': {
          'task': 'lims.projects.tasks.process_deadlines',
          'schedule': crontab(minute=0, hour='*/3'),
      }
  }
  
subject: Extend time period at which deadline processing happens