Not everybody has the ability to read a manual and instantly comprehend what the writer is saying. Especially if the reader is new to the product.
I know I can't. It takes time, experimenting and with luck, some help from understanding people who have been down that particular path before.
I've been told that people envy me because of how quickly I pick up things techy. If they only knew... all of the wrong directions I go off in, the reams of notes I write and discard, the laying awake at night mulling it over, etc, etc. Eventually, I start to get it.
Maybe an example of a macro of yours (that works) that uses time as a trigger. Just sayin'...
BTW, I don't have any. I use timers but have not had a need to write a macro triggered by time.