Is there a way to set up a date column to ONLY allow Monday dates?

For example, in the column, today’s date, 03/16/2021 or any other day the rest of this week wouldn’t be valid entries, BUT 03/15/2021 or 03/22/2021 would be. Is there a way to make this possible?

In Valid If:

(WEEKDAY([_THIS]) = 2)

See also:

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Exactly what I needed. Thank you so much!