Will I ovulate today or tomorrow??

Y’all I’m cracking up. I was so scared when my opk line was still soo faint yesterday, and I was so anxious that I wasn’t going to ovulate or something, so I took another one early in the day today because I couldn’t wait until I got home from work, and look that that FLAMING POSITIVE, IM SO HAPPY😱🤩

I’m still a tad confused on how these work. I know you ovulate 12-36 hours after the positive right? So is today my ovulation day, or is tomorrow? And today is my most fertile day, right? Or is that tomorrow too?? Do I keep testing to see when the line gets darker? The last time we had sex was Wednesday, so that’s good right, those sperm would still be alive today?

All I know is this positive is a good thing hahah, but help me understand the rest please 😂