Try

=IF(A1="","",TEXT(WEEKDAY(A1), "DDD") )

Your formula returns Sat because XL believes that day zero was a Saturday.

--
HTH

Sandy
In Perth, the ancient capital of Scotland
and the crowning place of kings


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"Alice M." wrote in message
...
Col A contains a date that I enter.
Col B contains the formula =TEXT(WEEKDAY(A1), "DDD") which, when I enter a
date in Col A, returns the day of the week.

The entire Col B is formatted with the weekday formula. If Col A contains
no
date, then Col B returns the weekday "Sat" all the way down the sheet.
(Why
"Sat" I don't know.)

My question is: How can I hide the display in Col B until I populate Col
A
with a date?