title: Getting the days between 2 dates in batch
body: <p>I'm making a auto update system, I need the system to open a webpage if the software is not updated for a certain amount of days. I log the date of every auto update so all I need help with is getting the number of days between the last auto update and the current date. I hope you can provide explanation about your code too, your effort is really appreciated, thanks in advance.</p>