How do I add a list of business days to a database with existing dates?

Is there an Excel tool that can help me include days people were absent in an entry/exit log using fingerprints?

What do I need? I need to know which days of the year the employee did not mark in a log of entries and exits by working days, in a list of more than 200 employees registered in column B. I have the days marked, the entry times and the exit times.

https://drive.google.com/file/d/1O3W3mnJJxmEyD5RuSK67uNBIx6BA7LLc/view?usp=drivesdk