Happy Zoo Year Guests are invited to ring in the New Year at the Cincinnati Zoo & Botanical Garden. “Party Animals” of all ages are invited to celebrate the 15th annual Happy ZOO Year powered by Cincinnati/Northern Kentucky Honda Dealers. This New Years’ bash will take place at the Zoo on Saturday, December 31 with a kid-friendly, early countdown at 8pm featuring the Zoo’s new 40-foot tall digital tree. PNC Festival of Lights Info