Can we do Temple of Heaven and Simatai great wall in one day by private car?

I am afraid that it is really pushed for time. The ticketing service in Simatai is only available at 10:00, 12:00, and 14:00. And the transfer needs more than 2 hours. In order to catch the 12:00 ticketing time, you need to set off to Simatai before 10:00. You should leave 2 hours for Temple of Heaven, so you need to get up very early and leave at around 7:00. All this is based on no traffic jam.