List/View for "Expiration Date" not working

Greetings.

I'm using the following line in Edit to update a date to 30 days in the future:
date("m/d/Y", strtotime("+30 days"));

But I cannot figure out how to see anything but "00/00/0000" on the list and view pages.
Any thoughts?

Also, I'm needing a Days Until the above day field populated if anyone has an idea.

Thanks!
Eric