When I set an appointment for Friday, October 3 at 930am,

When I set an appointment for Friday, October 3 at 930am, it shows on my google calendar as an appointment for 5:30am.

Today it shows that the entire day is busy, but I have no appointments scheduled on my google calendar.

Every Tuesday it shows that I have times 930am-130pm booked, but I have no appointments scheduled that day.

Can you please help me fix this?