Background: We've implemented basic hold shelf expiration date setting as part of . However, set dates are currently not respecting the closed library dates. Since institutions may want to put the hold shelf expiration dates into their patron notices, it would be best if those dates we days on which the library was actually open.

User story:
As a patron who has received a message that my requested item is awaiting pickup
I want to be given a request expiration date that is a day the service point is open
So I don't plan to pick it up on a given date only to find the service point is closed

Potential workaround: While waiting for this feature, a potential workaround might be to qualify the dates in the patron notice with text like (please check opening hours before planning your trip to the library).

Current thinking on design: Since we have the ability to set hold shelf expiration periods in minutes, hours, days, weeks and months (just like with rolling loans) and, since we already have closed library due date management implemented for loans, it would make sense to leverage the same logic and functionality. This means:

1. We need to add Closed library date management to the Service point (UIORG-158)

2. We need to make the hold shelf expiration date calculation respect that setting (UIREQ-246)