how long before i get to my 4;35pm dentist appointment if i  leave at 4pm and avoid i-55
[IN:GET_ESTIMATED_DURATION how long before i get to [SL:DESTINATION [IN:GET_EVENT [SL:ORGANIZER_EVENT my ] [SL:DATE_TIME 4;35pm ] [SL:CATEGORY_EVENT dentist appointment ] ] ] if i leave [SL:DATE_TIME_DEPARTURE at 4 pm ] and avoid [SL:PATH_AVOID i - 55 ] ]