This event is in the "Children's Services" group. The Great Playdate All Day Children's Services Offsite Event This event is in the "Children's Services" group. Sep 22 2018 Sat The Great Playdate All Day Please note you are looking at an event that has already happened. Library Branch: Off Site Program Type: Children's Services Event Details: The Great Playdate is a county-wide event for little ones and their caregivers. Each library can celebrate the day in their own special way. Check the website for list of participating libraries, details on events, and more!