Supermarket Daily Shopping Cycles

I went to the supermarket last Thursday in the middle of the day, and the shoppers there at that time of the day were so much different than during the weekends and evenings.

Supermarkets should track their sales during these two different times of the day and week and identify the different types of purchases that are made. They could then create some portable merchandising displays to be rolled in and out during two cycles to maximize sales.

Does anyone know of any stores that change their merchandising setups throughout the day? If so, please comment. Thanks!