When user types in the letter Y in Column P, I want the next cell, in
Column Q to show the current date. I want that date to stay, and not
change tomorrow. So, the NOW function doesn't work for me.

I looked in here yesterday, and found what I thought was the answer. I
put this in a module.

Function DateAndTime()
DateAndTime = Now
End Function

When I tested it yesterday, it seemed to work ok. Of course I couldn't
tell until today, when the system clock changed. Today, I see the date
of 4/1 didn't hold. It now says 4/2.

Is there something else I can try? I can't change the system clock in
order to test it all out. I have to wait until the next day.
Please help!!
Thanks
j.o.