The list ended 24 hours after local midnight. On the 25-hour day of an
autumn DST change that left the last hour out, so a dose due then could
not be offered from it; on the 23-hour spring day it reached into the
next day. Take the day's bounds from getUserTodayBounds, as the dashboard
tile does. Anchor the health-status test's history to local noon: now
minus whole days is still today on the long day.
