All day Port Jefferson Festival of Trees Ages: 5 – 8Family Free Holiday Port Jefferson Village CenterPort Jefferson
10 am – 4 pm Dinosaur Carnival Ages: AllFamily Festivals Center for Science Teaching and Learning-Tanglewood PreserveRockville Center
10 am – 5 pm December Break at the Cradle of Aviation Ages: AllAttractions Family Cradle of Aviation MuseumGarden City
10:30 am Harry Connick, Jr.’s The Happy Elf Ages: AllChristmas Family Holiday The Argyle Theatre at Babylon VillageBabylon
11 am – 4 pm First Visitors of the Year Ages: 3 and upAttractions Community Family The Whaling Museum & Education CenterCold Spring Harbor
11 am – 4 pm Warm Up on Frosty Fridays! Ages: 3 and upAttractions Community Family The Whaling Museum & Education CenterCold Spring Harbor
11 am – 4 pm Find the Yeti Ages: 3 and upAttractions Family The Whaling Museum & Education CenterCold Spring Harbor
11 am Holiday Break Activities Ages: AllAttractions Family Cold Spring Harbor Fish Hatchery & AquariumCold Spring Harbor
11 am – noon December School Break Walk: Backyard Birds Ages: AllEnvironment Family Free The South Fork Natural History Museum and Nature CenterBridgehampton
2 – 5 pm The Gateway’s Holiday Spectacular on Ice starring Nancy Kerrigan Ages: 5 and upFamily Theater The Gateway PACSCBellport
5 pm Sayville Falls Holiday Light Show Ages: AllAttractions Family Holiday Sayville Falls Mini GolfSayville
6 – 7 pm Club 8: Ridiculously Fun Social Skills Group for Teens Ages: 13 and upCommunity Family Club 8Plainview