| HS Finals Week Activites: Therapy Dogs | 01/21/2020 12:00 PM - 2:00 PM |
| HS Teens: Fun Friday | 02/21/2020 3:00 PM |
| HS Teens: Fun Friday | 02/07/2020 3:00 PM |
| HS Teens: Fun Friday | 01/24/2020 3:00 PM |
| HS Teens: Fun Friday | 01/10/2020 3:00 PM |
| HS Teens: Fun Friday: CANCELLED (NO SCHOOL) | 03/06/2020 3:00 PM |
| Hyperion Community Forum | 02/04/2026 6:00 PM - 7:00 PM |
| Hyperion Community Forum | 05/14/2026 6:00 PM - 7:00 PM |
| Hyperion El Segundo Citizens Forum | 07/21/2022 6:00 PM - 7:00 PM |
| Hyperion Recovery - Citizens Forum | 10/21/2021 6:00 PM |
| Hyperion Water Reclamation Plant Community Forum and Tour | 10/18/2025 10:00 AM - 12:00 PM |
| Hyperion Water Reclamation Plant Tour | 11/10/2022 4:00 PM - 5:30 PM |
| I Am Golden Storytime & Craft | 05/16/2022 3:30 PM - 4:30 PM |
| Ice Pop with a Cop | 08/17/2023 1:00 PM - 3:00 PM |
| Ice Pop with a Cop | 08/13/2024 1:00 PM - 2:00 PM |
| IMMERSIVE OZ EXHIBIT | - |
| IMMERSIVE OZ EXHIBIT | - |
| IMMERSIVE OZ EXHIBIT | - |
| Independence Day - City Hall Closed | 07/04/2024 |
| Independence Day - Library Closed | 07/04/2026 |
