Add Values From Non-Working Days to Monday Total

[ddavelarsen]

I am trying to add the total of items that come into the office during weekends and holidays, to the total for each following Monday. I can identify weekend and holiday days in an adjacent cell by its contents, either blank or zero. I wish to sum the incoming number of files from the weekend/holiday to the following Monday's work.

I believe I've attached an example of the values I'm trying to sum, with one set including a holiday ( three day weekend).

Anyone have any ideas? Suggestions deeply appreciated.

Thanks,
Dave