How were Harry and Hermione not spotted por their past selves when they used the Time Turner?

They were very careful not to be seen por their past selves, o anyone else. They waited til dulce de azúcar, fudge was lectura the charges inside Hagrid's house, to ensure no one would be looking out the window because they all had to be watching dulce de azúcar, fudge and listening to him. Their past selves had actually moved on and were approaching the willow por that time. They only heard what they assumed was the execution - the executioner swinging his axe into the fence in frustration and then Hagrid's howl of joy, which they thought had been grief.