12 Day Advent Calendar Houses SVG FILE for Cricut, Silhoeutte, Scan n Cut and any other machine that uses SVG files. This is such a fun project! This 12 day advent calendar countdown features three houses with 12 numbered windows and doors that open and reveal a treat hidden inside. Be sure to watch the assembly tutorial below. If you start using this advent calendar on December 14, it will end on Christmas Day. I hope you have fun making it.