Conditional formatting based on date

Question

Trying to set up a time card at work in Excel, have dates going down the left-hand side of the worksheet:

Fri 1/1/11

Sat 1/2/11

Sun 1/3/

Answer 1

Assuming dates are in Column A:

=IF(OR(WEEKDAY($A1)=1,WEEKDAY($A1)=7),1,0)

Reads If the weekday is either Sunday or Saturday then True (Use Conditional Formatting)

Or you can modify the same formula so that the 'weekdays' starts on Monday so it looks like this:

=IF(WEEKDAY($A1,2)>5,1,0)