6 – 7 pm Club 8: Ridiculously Fun Social Skills Group for Teens Ages: 13 and upCommunity Family Club 8Plainview
8:30 am – 4:30 pm Safe Boating Course Ages: 9 and upBoating Classes Family The Whaling Museum & Education CenterCold Spring Harbor
10 am – noon AMSEAS Beach Walk & Cleanup at Hallock State Park Animals Community Hallock State Park PreserveRiverhead
10 am – 5 pm Moon to Mars Ages: 8 and underAttractions Family Long Island Children’s MuseumGarden City
8:30 am – noon YMCA 5K Run/Walk In Memory of Marcie Mazzola Ages: AllFamily Fundraisers Sports Huntington YMCAHuntington
9 am – noon Rhiannon’s Run 5K Run/Walk Ages: AllFamily Fundraisers Sports Santapogue Elementary SchoolWest Babylon
9 am – noon Gary Mintz Memorial 5K Run/Walk Ages: AllFamily Fundraisers Sports Brentwood High SchoolBrentwood
9 am – noon Run For Caumsett 5K Run/Walk Ages: AllFamily Fundraisers Sports Caumsett State Historic Park PreserveHuntington
9 am – noon May the 4th Be With You 5K Ages: AllFamily Fundraisers Sports Hempstead Lake State ParkWest Hempstead
10 am – 5 pm Moon to Mars Ages: 8 and underAttractions Family Long Island Children’s MuseumGarden City
10 – 11:30 am SMLI Family Workshop – Egg Drop Challenge Ages: 5 – 12Craft & DIY Family Science Museum Of Long IslandManhasset
10 – 11 am Cantemos de Domingo Ages: 4 and underEn Español Family Free Children’s Museum of the East EndBridgehampton
2 – 3:30 pm Mutts Gone Nuts Ages: AllAnimals Family Jeanne Rimsky Theater At Landmark On Main StreetPort Washington
Tomorrow, 7 pm The Search for Interstellar Objects of Technological Origin (A Free, Virtual Lecture) Hamptons Observatory with Suffolk County Community College (online)