Having been involved in maintaining and publishing a regional community website that has an EXTENSIVE calendar of events, I can, without hesitation, say THURSDAY is the day people plan their weekend. Access to the events calender on Thursday was triple that of any other day.
So, the real question is, "Should you post your listing based on consumer behavior? OR "Do you post based on your understanding of when an agent puts the tour together?"
I don't see how you can go wrong with Thursday, even Wednesday has it's merits.
Best of Success to You,
Annette Lawrence, Broker/Associate
Remax Realtec Group, Palm Harbor, FL
727.420. 4041 - http://www.RealEstateMadeEZ.us