I am trying to figure out the best approach to this so I appreciate your thoughts. I'm running a model that uses the number of minutes remaining as an input. Let's say it counts down to September 30th. So as of right now there is roughly 21*24*60 = 30,240 minutes remaining. The time remaining should decrease every second. How can I achieve this? Some sort of endless loop? Part of a script? Or a function? Keep in mind this is only one input in my model, and there are many other moving parts. What type do I want...a datetime array? That is what I have been working with so far.