How can I modify the flow of time (not fps) in Dwarf Fortress?

Thank you for considering my question.
What I am interested in doing is altering the actual in-game time that passes on the calendar when the game is running, per frame. If you look here, there is some very useful information. It says:

Every tick causes the in-game clock to advance by a specific quantity of time that varies depending on the game mode. In adventurer mode, 1 tick moves time forward by 0.5 seconds, whereas in fortress mode this causes 72 seconds to pass by. Thus, the simulation of time runs 144 times faster in fortress mode on a per-tick basis.

The specific quantity of time that the in-game clock advances per tick, is what I want to manipulate. By manipulating the game files, as is clearly stated in the wiki, you can modify the FPS settings, and by default even manipulate them in game, and by lowering the FPS you could effectively slow down the flow of time. Again the in-game clock time. However, as it says, at 30 FPS a year of game calendar time will still pass by in approximately 3 and 1/2 hours. I would like to be able to modify this all the way down to real time. Or even faster for experimentation.

To be more specific, exactly what game files control these variables, where can I modify the actual variables for how much in-game clock advances per tick?