Use the Available dates calendar on the right-hand side of the dashboard (on phones, tap the floating menu button and choose the calendar icon to open the same calendar in a popup):

1. Use the ‹ / › arrows in the calendar header to move to the previous or next month.
2. Click any day number. The dashboard reloads as /admin/?dd=YYYY-MM-DD for that day.

You can also type the date straight into the address bar using the dd parameter. If the date you request does not exist as a delivery date, the dashboard jumps to the first available delivery date in that month instead.