Reading a medical chart

1
Would a chart be read for the assigned time of surgery? Or would it be read for the time it began?
Have 2 charts for same surgery one time is 7:00 in the morning - time patient was assigned and went to hospital. The other is 10:45 in the morning - last thing patient saw was clock on wall prior to being given anesthia.

I'm assuming that the later time when the patient went into theatre is the correct chart, but I have no experience in reading medical charts. Patient wants to know if everything is resolved forever. No more surgery, no hospital, at least on this issue.