Program at chosen time


Can you help me to find first steps for made arduino program that work at chosen time of days please ?
I want to start and stop a servo motor all nights at a chosen time

…sorry! I’ve just find DS1307 module !!
I think it’s the good way but I can’t delete my first message

DS3231 is also a good module. More accurate than DS1307 and can also measure temperature if you want that.

Thank you !! DS3231 is more simple for me !

DS3231 is more simple for me !

Why is that?