ExcelBanter - Time to process

ExcelBanter (https://www.excelbanter.com/)

- Excel Discussion (Misc queries) (https://www.excelbanter.com/excel-discussion-misc-queries/)

- - Time to process (https://www.excelbanter.com/excel-discussion-misc-queries/132570-time-process.html)

CASBMS

Time to process

I am trying to figure process time to process bewtween date adn time in .25
hours. I am using the following formula.

=CEILING((B3-F3)*24,0.25)

Does anyone know how to take holiday and weekends out of the total process
time?

All times are GMT +1. The time now is 07:29 AM.