I had been under the impression that Pesach Sheini was only a historical and future observance -- that is, when the temple stood/stands. I didn't make the connection that it might also be special now until somebody wished me an early Pesach Sheini samayach today.
I know that some have the custom to eat matzah on this day and some omit tachanun, and that Chabad says it is a day of "second chances" and has some talks and essays on that theme, but I'm still at a loss for what one should be doing to mark the day. It's not chag, but is there a custom to make a festive meal? Are there any family/home-based observances (other than the matzah)? What do those who do anything special on this day actually do?