Calculating end-time from user given start-time and minutes in Python

I am trying to calculate and store an end-time (formatted as hh:mm:ss) in my database given a user input start-time (formatted as hh:mm) that I add 'x' minutes to.

What tools does Python offer to help with this?

from Recent Questions - Stack Overflow https://ift.tt/3xGhaID
https://ift.tt/eA8V8J