In financial calculations it is quite common to assume a 360-day year, with
12 months of 30 days. There are special rules (in at least two versions),
that's why this function is useful.

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Kind regards,

Niek Otten

"Owen" wrote in message
...
Is there a reason to use this formula for an aging calculation? I would
think
to just take the current date minus the date of receipt to get the actual.