What day would I have ovulated on?

Tee💋 • Ttc bby #1 👶🏾 ❤️⭐️💘💜❤️🧡💛💚💙

Ok so i took an opk on the 15 is was negative then on the16 it was positive. Took another on the 17th and it was negative is it safe to say i ovulated on the 16?