This event is in the "All Ages" group. Trick or Treat at the Library 10:00am - 5:00pm All Ages This event is in the "All Ages" group. Oct 31 2024 Thu Trick or Treat at the Library 10:00am - 5:00pm All Ages Library Branch: Nipomo Library Age Group: All Ages Program Type: Family Activities Event Details: If you wish to join our jamboree, there is one rule that is compulsory. Wear a costume.