Accurately get the next day.
Test: atest com.android.server.notification.ScheduleCalendarTest
Fixes: 110355145
(cherry picked from commit fe099b59ec)
Test: Treehugger
Bug: 110355145
Change-Id: Idc20944679b44b30a40eb65d958df9fffec69375
Merged-In: Idc20944679b44b30a40eb65d958df9fffec69375