Answer 1

The datetime library might help. A few weeks back I wrote the below code. Feel free to adjust it and allow for user input to adjust seconds, minutes hours or days

A Google search revealed the below GitHub, which might also give you some ideas.

https://github.com/Jabromen/JUMP_LINK__&&__Python__&&__JUMP_LINK-Alarm-Clock/blob/master/alarm_clock.py

https://code.sololearn.com/cLKoET9fD83V/?ref=app