The American Space Museum’s second annual 321 Day celebration will take place this weekend. The event honors Robert “Ozzie” Osband, credited as the father of Brevard County’s 321 area code. Festivities in Titusville will occur TODAY from 3 p.m. to 9 p.m., featuring food trucks, local vendors, and music. Eau Gallie’s celebration is Saturday from 11 a.m. to 4 p.m. at Pineapple Park. Both events are free.