Hardyston The Sussex County YMCA celebrates its third birthday with an open house on Sunday, Jan. 27 from 11 a.m. to 2 p.m. at the Y located at 15 Wits End Road. Special activities are planned and birthday cake will be served. This is a free event open to the community. For information, call 973-209-9622 or visit www.sussexcountyymca.org.