This is a block that will calculate how many days since any given date using math. This is really useful in timer projects since Scratch doesn't offer other "days since" blocks besides the "days since 2000" block, which might be one of the most useless blocks on Scratch. To check out this block, click the purple "see inside" button and read the comments I put there. They explain how the block works and how to use it. Hope you use this block in your projects, I know I will!