Sonoma Raceway
United States of America / GR Cup
31 March 2023 - 2 April 2023
| Session | Local Time | GMT |
|---|---|---|
| Practice 1 | 11:25 am | 06:25 pm |
| Practice 2 | 04:25 pm | 11:25 pm |
| Session | Local Time | GMT |
|---|---|---|
| Qualifying | 10:10 am | 05:10 pm |
| Race 1 | 01:55 pm | 08:55 pm |
| Session | Local Time | GMT |
|---|---|---|
| Race 2 | 08:20 am | 03:20 pm |
| Autograph Session | 11:00 am | 06:00 pm |