Celebrate Your Conservation Contributions at World Giraffe Day May 23, 2024 On the longest day of the year, Cheyenne Mountain Zoo will celebrate the longest-necked animal: the giraffe! On Fri., June 21, giraffe keepers and staff from the International Center for the Care and Conservation of Giraffe (The Giraffe Center) are throwing a daylong event to commemorate World Giraffe Day. “This is our way of thanking . . .