Does anyone have any suggestions on how to count the time slot?
The slot is shown below
Today is 24 July
10 am to 12:30 pm
2:30 pm to 4:00 pm

I would like to count the time based on following conditions
If I start a project at 10:30 am on 24 July, and require 5.5 hour to
complete it, then I should finish it on 12 pm on 25 July.
If I start a project at 10:30 am on 24 July, and require 25.5 hour to
complete it, then does anyone have any suggestions on how to determine the
finished time and date? please skip the weekend, I only work from Monday to
Friday.
Does anyone have any suggestions on how to do it in Excel?
Thanks in advance for any suggestions
Eric