Given the outcome you are trying to achieve, you can use the following comparison.
If startDate is on or before today + 1 then do actions
| startDate | today (2023-07-03) + 1 | is on or before? |
|---|---|---|
| 2023-07-01 | 2023-07-04 | yes |
| 2023-07-02 | 2023-07-04 | yes |
| 2023-07-03 | 2023-07-04 | yes |
| 2023-07-04 | 2023-07-04 | yes |
| 2023-07-05 | 2023-07-04 | no |
| 2023-07-06 | 2023-07-04 | no |
In your Define Variable, configure it as follows:
In your Compare Timestamps, configure it as follows:

