National Park Week 2019 is from April 20 to 28! Parks across the country will host a variety of special programs and events. On Saturday, April 20th entrance to Arches, Bryce Canyon, Canyonlands, Capitol Reef, and Zion will be FREE.
https://ksltv.com/412119/national-parks-week-means-free-entrance-utah-parks/?sfns=1