[Crayder]

I managed to make a version that is much better than this one. I'm not trying to compete.

My version's TimestampToDate (which in mine is called stamp2datetime) returns the exact date and time of any timestamp you feed it, even the exact `gettime` seconds. The inverse, DateToTimestamp (which in mine is called datetime2stamp) works just as perfect, any date and time you feed it will return the exact timestamp from that specific time.

stamp2datetime was actually converted directly from pawn's source code. It's one of those functions that aren't included in SA-MP's version of pawn. I converted it's internal function to actual pawn code.
stamp2datetime was from a Python script I found and fitted to stamp2datetime's flavor.

Neither of the functions have been cleaned up, I have only converted them to a working states.

Mine supports gmt, but not daylight saving.

https://github.com/Crayder/Time-Conversion

Once I clean them up I'll release it officially.

Ps. Again, this is not a competition. This (Jochemd's) works well for most cases as well. My inverse function supports time and date, and it's parameters are not a string like this one's.