The SPC has obvious practical application to the captive insurance and reinsurance industries as it allows insured persons to better assess and handle the risks of the insurer by focusing only on the sufficiency of reserves of the relevant segregated
To insert a fixed date into a cell (a date that you don't want to change) hold down Ctrl while you press the semicolon ( ;) key. To insert the current time (without a date), press Ctrl-Shift-Semicolon.
Do it on your =NOW() formula, and it should stay fixed. I would try inserting the current date into a cell via a macro. The question then only is, when and how to trigger that. You could for example press a button and it would insert today's date (not as a formula) into a cell (one particular or the selected one). In VBA you can use Now(), Date() and Time(), depending on what you need exactly.