Getting the system boot time in Windows

Today I needed to get the system boot time of my computer.

You can either open the system log and look for the entries a Windows start up writes there, or you can let a tool do the work:

@echo off
systeminfo | find "System Boot Time"

In my case the result looks like this:

System Boot Time:          13.10.2016, 09:14:50
Press any key to continue . . .

There are a lot more options, detailed in this answer on StackOverflow.