Too many variables to give a precise answer. For me hunger pangs disappear after \~36-48 hrs, but other people do 2 weeks getting them the whole time. Starting weight, diet, fasting experience, diabetic status, and more all factor in.
I tend to get hunger pangs a few times a day, but not constantly. Like usually 2-3 pangs a day on day 2+. Usually goes away if I do something else (taking a hot shower, drinking tea, watching a funny video)