Recurrence/appearance inconsistency
 

Through various mishaps involving time zone settings and syncing with a new
smartphone (not too smart) I am in a situation where all my calendar got
moved two hours later. The settings are still at the correct times when I
look at the recurrence information. For example, appt A is Monday from
9-9:45. But it shows up on my calendar pages, for eternity, at 11. I have
many many recurring appointments, extending years ahead. Is there some way
to fix this without doing it manually one at a time? If not, how do I wipe
out the calendar entirely and start over?