Help with OPKs

Lindsey • Angel baby 7/23/2019🌞🐶👶🏻 Ectopic loss 11/5/2020 🌈💔 Twin babies lost 2/24/2021 💔 Miracle baby girl 🎀🌈 due 6/6/2022 Dog momma to 3 lab babies - Dakota, Tucker, Paisley. Goat mom. Chicken mom.

I got test lines as dArk as the control line all day yesterday. Then today I got the test line darker than the control. Does the 24 hours to ovulation start from yesterday with the highs or today with the peaks?