Time zone change is changing appointment times!

Reside and work in CA. Traveled to FL and entered appointments in calendar for future time when I travel again in FL.

Upon my return back to CA, both appointment times that were set while in FL both have set the appointment time of 6:10 am

In addition, note that while in FL, an appointment that was set for 10:00 am for a future date in CA displayed as 12:00 noon while in FL.