Photo and Text credit http://en.wikipedia.org/wiki/Saint_Nicholas
Taken directly from Wikipedia….He had a reputation for secret gift-giving, such as putting coins in the shoes of those who left them out for him, a practice celebrated on his feast day―St Nicholas Day (6 December, Gregorian calendar, in Western Christianity and 19 December, Julian calendar, in Eastern Christianity) ;[7] and thus became the model for Santa Claus, whose modern name comes from the Dutch Sinterklaas, itself from a series of elisions and corruptions of the transliteration of “Saint Nikolaos”. (End copy paste from Wiki.
It is celebrated twice a year. All of them maybe. I am unsure.In December this is a fasting slava. It is also celebrated in May. This is not a fasting slava. Much better food is served in my opinion. 🙂
This is our patron saint. Every family has one in Serbia. When it is your Saints day, it is the custom in Serbia and only Serbia, that you have a dinner and invite your friends. They come at an appointed time. Most likely that you will be serving loads of people over two or three days.
I love this Saint and how he became one. Everyone should strive to be a secret giver. Random or non-random acts of kindness are a great way to make life better. Giving is so much better than receiving.
Happy Sunday!
Dobar Dan Y’all!
Chronicles of Serbia 
If only everyone could learn how simple it is to show the generosity you describe: the world would be such a better place.
Totally agree!