It is possible.
The dates you saw are "text book" dates - ie the averages dates that a woman is likely to ovulate.

As your cycle could be more or less than 28 days on average or you could be a late or early ovulator it is not possible to know for sure if you were fertile at that time.

Unless you are a dedicated charter and therefore know when you ovulate, you must consider yourself to be "possibly fertile" at all times.

So the short answer is "yes, it is possible" for you to get pregnant at that time.