Thanks Cassy Freeman for this great challenge.
I only built a site workflow that will calculate the dates for the year but this could have been extended to using a SharePoint list and reading the data from there.
My goal was to calculate the first required Tuesday's date and the rest would be easy. I created my two collections with the split actions. Doesn't matter what day Tuesday falls on, the furthest it can go is day 14 for the second Tuesday so I only looked at the first 14 days of the month.
And I built a collection for the months in the same way.
Then I performed a For Each action inside a For Each Actions to run through the first 14 days of every month.
I did a check on every day to see if it is Tuesday and then counted the Tuesday until I got the second Tuesday.
Once I got the second Tuesday, the rest was easy. I used the second Tuesday's date to Create Server A,
Server A Date + 3 = Server B date (...with Date Calculations)
Server A Date + 6 = Server C date
Server A Date + 6 = Server D date
Server A Date + 7 = Server E date
Server A Date + 7 = Server F date
This would create all the dates required in my calendar for the year.
Thanks Cassy, it was good to try something different from normal work