—Paulette Jahnke, Cincinnati, Ohio Because American calendars are out of sync with Americans! Our calendars do not follow international standards (ISO 8601), which start the week with Monday and end it on Sunday. (I myself find the Sunday start so counterintuitive that I always choose the Monday-start option on my digital calendars.) Our country’s practice dates back to the Romans, who named the days starting with the sun (Sunday) and the moon (Monday).