Ovulation Question

Stephanie • ❤️ Hi! I’m 38 & TTC Baby #2 ❤️

I got a positive OPK where the test line was just as dark as the control line and then the next day I got a positive OPK and the test line was darker than the control line. When would my true ovulation day be - after my first positive OPK or after the OPK when Ingot my darkest line?