Scout -
Like Flicker, I’m not sure one HAS to do the consecration on the days suggested. I am, however, a lover of tradition, and it seems to me that there are so many suggested days that you shouldn’t have to wait long for the next. The Assumtion is coming up soon, and there are so many Marian feasts that with the 33 day preparation period, one never has to wait long to consecrate on a designated day. Using one of the suggested days also serves to make it easier for you to remember the day of your initial consecration. I chose St. Louis’s feast day (April 28) for mine. The choice is yours, however. Whatever you choose, I know you will be glad you made the consecration. God Bless!!
Chuck