A little bit of a bit of a different schedule this year in Detroit. There is only one late afternoon practice session Friday, and the qualifying procedure each day sees a slight modification.
Instead of the fastest driver in each of those two groups making up. the front row, an extra 10 minute round has been added with the fastest six from each group running for the pole. I assume that the the groups switch. order for Sunday’s qualifying.
The IMSA race is Saturday afternoon at 5 pm following the Indycar race