Sunday, February 11, 2018 Promise Day ➤ Promise Day – The Fifth day of Valentine. Promise Day. Now, most of the people didn’t even understand the true meaning of Promise Day. Promise day is not something you say and forget. A promise is something you make and mean it. You can do anything to protect that promise. It is a feeling of trust and love is a form of faith, just never break it. Make a promise and mean every word you say.