December: 31 (222+31=253)

June: 30 (39+30=69)

July: 31 (69+31=100)

Starting with March 22, 2022: Adding 280 days. March has 31 days, so March 22 to March 31 is 9 days. April has 30, May 31, June 30, July 31, August 31, September 30, October 31. Let's count: