Is it possible to press the button at the right time for me?

Question

Python

is it possible to make the button clicked at the time I need,
for example, I need to click on the button in selenium with id-"name" at 15:00,
I call the variable, a=input()
enter the time there in this format 15:00:00:000
hours/minutes/ seconds / ms
how can I make the variable asynchronize with the current time?