Count dates
I need to keep track of how many dates the local swimming pool is open. When
I type in a date (for instance, May 15) in cell A1, I want cell B1 to tell me
that is day 1. When I enter the next date (May 16) in A1, I want B1 to tell
me it is day 2.
How can I keep track of how many days the pool is open?
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