Help two different ovulation days?

Lina

I am new to charting since I just came off birth control after 18 years. Glow told me i ovulated on the 13th but fert-friend says I ovulated on the 12th. Which one is correct?

Also if I BD on the 13th and i did actually ovulate on the 12th did I miss my chance or pregnancy or could it happen? I guess I’m asking can you BD the day after ovulation and still get pregnant? Or do you have to BD the day before or day of???