Graduation Day was on Saturday morning, May 20 in the Granite Bowl. Is this the appropriate time to hold the high school's graduation ceremony? Sun, 05/21/2017 - 9:27pm Editor Choices Makes perfect sense. Beautiful sunshine, early in the day, easy to make plans around. Friday night under the lights is the best night in the Granite Bowl for football and graduation. Doesn't matter when or where - the most important thing is to graduate!