See inside. If you don't know what Unix Time is, it's the number of seconds since 1 January 1970 00:00:00 UTC+0
For @Macie1234 https://scratch.mit.edu/discuss/topic/201939/ This project is accurate within a second and is precise enough to count milliseconds. This took about a minute to make. If you want milliseconds since the Unix Epoch, multiply the number by 1000.