Glow ovulation predicted date vs real date

Jillian 👣 praying for our 🌈

Glow predicted my ovulation date as 10/24. I took my OPK yesterday (10/19) and it showed I was in my peak fertility surge. I'm having ewcm as well. Does anyone know if you can change your ovulation date on your calendar? Hoping/ praying I'll be pregnant by next month and it won't matter but I want my info to be correct.