Be sharp on time by requlating travelling speed and path

Requlate walk/bike/car speed based on how early you are (i.e. for catching bus)

Riding bike slowly gives chance to speed up when late. Accelerating should give you "time reserve."

It's easier to move faster than leaving some place at very exact time (even with alarms!)

Select your speed after exiting appartment or at some checkpoint(checkpoint alarms).

This technique allows to be very sharp on time anywhere you go. Especialy if your paths are a bit longer.
If you don't use the shortest path then you can use these shortcuts to improve your timing.