Along with all other churches of the West, St Mary's goes by the Gregorian calendar introduced in 1582.

Our fellow Christians in the Orthodox Church go by the older Julian calendar introduced in 45 BC, as still preferred troughout the East.

This means major holidays frequently fall on different days for Western and Eastern Christians.

For example, while St Mary's celebrates Christ's birth on the date we call December 25, our Orthodox brothers and sisters celebrate it 13 days later on January 7, their "December 25"!

Wondering when your neighbour will be celebrating Easter?

Click here for an online calendar converter!

And while you're at it, click here to see what Orthodox feast days will be celebrated this month throughout Serbia.