Extension that displays delivery date on product page when out of stock

Hi there
Please help. I'm running v3.0.2.0 and am looking for an extension that would would display approx delivery date when a product is out of stock on product page. ie: something like Out of Stock - Delivery approx 15 days (or date if possible).

I've looked at the extension market place and couldn't find anything

Can anybody please help

Thanks in advance
Regards
Ray

This request could be a bit problematic since the server time announcing the product could differ in the time zone compared to the customer's time zone.

thanks for response. I see where you're coming from. No harm in asking

Thanks again

Ray