Some people like to do this at the beginning of the liturgical year at the start of Advent. Others prefer to find their new saint for the new calendar year. Me? Usually it's when I remember, and there's no rhyme or reason as to when that is.
For the coming year, I received a saint that I have heard of but know little about - St. Mark the Evangelist. He was one of Christ's original twelve disciples and author of one of the books in the Gospel. He is also patron saint of lions, lawyers, notaries, opticians, pharmacists, painters, secretaries, interpreters, prisoners, and people dealing with insect bites. I am curious as to how St. Mark fits in to my 2017.
Did you get your saint yet?
St. Mark, pray for us!