And the LORD spoke to Moses, saying: Speak to the Israelite people, saying: When any of you or of your posterity who are defiled by a corpse or are on a long journey would offer a passover sacrifice to the LORD, they shall offer it in the second month, on the fourteenth day of the month, at twilight. They shall eat it with unleavened bread and bitter herbs, (Numbers Chapter 9)To remember this second chance, there is a custom to eat Matza on Pesach Sheni, and some communities omit prayers that are considered inappropriate on happy days. But for most of us Pesach Sheni usually passes unnoticed.
I propose that it should be the Jewish holy day of second chances. The day of do overs. Just as God gave those Jews a second chance to fulfill the Pesach sacrifice, so, too, we should give others, and ourselves, a second chance, or at least the benefit of the doubt--a Jewish day of reconciliation.
It was always significant for me that I was given a second chance to raise a son after a ten year gap between he and his older sister and that the second chance was given on Pesach Sheni. Second chances make everyone better!