May 16 is celebrated where whoever asks their friend or any human for any amount you would like and how you want to present it.
Kyle asked his friend for $20 and Ryan gave him the money because Kyle asked first.
Give your friend money day
January 11 is the national give your friend's money back day, where people worldwide return the money they owe back to their friend!
You: Hey Ryan, Happy January 11!
Ryan: What's January 11th?
You: It's National give your friend's money back day.
Ryan: Cool man, here's your money back!