[Events +] events+ changing week to Sunday to Saturday

http://junction-creative.online/badm-calendar weekly calendar is August 12 to 18th. We changed setting in wordpress to have week go from Sunday to Saturday. When you hover over Sunday events it is showing 19th events? If we take it back to the week being Mon-Sun (no problem). Any ideas. Another note is the weekly calendar is not responsive like the the monthly and daily.