Due date not computed correcty (also after renewal)

[pronguen]

Describe the bug

Case 1: Renewal date is sometime one day later than checkout date, and does not respect the open days of the library.

Case 2: The loan duration is not exactly the same than in the circulation policy (in general 1 or 2 days longer) and does not respect the library open days.

To Reproduce

Case 1

1. Take a patron account
2. Use two items with the same item type.
3. Set the same loan and renewal duration (for inst. 28 days for both)
4. Do a renewal on one item and a checkout on the other
5. See the different due dates

Case 2

1. Log in bib.rero.ch as a Valais professional
2. Do a checkout for a standard patron with a standard item (should be a 28 days checkout)
   • use item barcode test_rero on patron.pid 223550
3. See that the due date is not correct

Expected behavior

Due date respects the circulation policy settings and the library open days.

Context

• server: ils.test.rero.ch and production
• version: v1.4.3

[ManaDeweerdt]

I'm note sure if it is linked but on our instance (ver.1.4.9), we tested checking out an item with a circulation policy 'onsite' (0 days).
The item should be overdue the same day at night but on the user account the item is overdue the next day.
Note: the due date in the overdue notification is correct and it counts the fees correctly.
In the screenshot below, the due date should be the 6/09 PM but it says 7/09 on the user account.