time.h functions not available on Windows

[pie-flavor]

time, localtime, etc. are only available on Unix even though Windows has them.

[arihant2math]

I've extracted time.h (from the x86-64 sdk) here: https://gist.github.com/arihant2math/9166f942d2caf964acd7eb587e0030e7

It's not easy to find all the functions from the microsoft docs.