On designated holidays, there is no garbage collection in the city. When a holiday falls on a Monday, sanitation workers collect their normal Monday route and half of their normal Tuesday route on the Tuesday after the holiday. On the next day, Wednesday, they collect the second half of their normal Tuesday route and all of their normal Wednesday route. On Wednesday, September 6, two days after a holiday, the resident at 456 Dornan Street phones the city's Sanitation Department to complain that his garbage, which is normally collected on Tuesdays, is still sitting in front of his house. Which of the following explanations would describe most clearly and accurately to this resident why his garbage has not yet been collected?