[libreoffice-users] Calc date formulae

Hi,
I have a series of future dates calculated according to certain criteria.
I would like to:
1. Add a formula in a cell that says "if this date is a Saturday, 
subtract one day, if this date is a Sunday subtract 2 days, if this date 
is a weekday, do nothing"

2. I don't know if this is even possible - could I use this future date 
to generate a reminder in Lightning calendar?

Thanks

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