There's a macro program included with BrowserBunch, BBSS.exe. When the tabs you want are in a browser, make the browser the active window anf hit the hotkey. It saves all the urls to a text file. You can name it anything with a .txt extension, such as '
tuesdayUrls.txt or whatever. In W7 and later you can pin BrowserBunch to the Taskbar and pin these text session files to it. To launch the one you want, right click BrowserBunch Taskbar icon and click the file.
I think there's also a FF extension that saves the addresses of all open tabs to a text file one url per line. That may also work with BrowserBunch. I forget the name of the AddOn at the moment.