Download and print your April calendars for free! These printable calendars are .pdf files that are easy-to-print on any computer with Adobe Reader. They are designed to fit the standard 8 ½" x 11" sheet of paper in landscape format. Earth Day is marked on our calendars so you can celebrate. Easter is marked when appropriate - it always falls on a Sunday between March 22 and April 25 - about seven days after the astronomical full moon. April always has 30 days.