One of the more entertaining aspects of PAYG is discovering the saints days, holy days and other special days that are marked. Today is the RC festival of two Thessalonican brothers from the 9th century who undertook missions among the Slavic peoples in what is now known as Bulgaria. No martyrdom so far as I can ascertain, Cyril is credited with the alphabet used in eastern European countries to this day and it seems the brothers were advocates of liturgy in the vernacular.
I don't think anyone has developed a card for this festival! I presume it won't result in hikes in the prices of flowers or chocolates or strawberries, but the ability to read scripture in the vernacular, to pray in our native tongues and to hear of God's love in words we understand seems worth celebrating. I think today I will take a moment to recall the work of the Bible Societies worldwide who still strive to bring these life-giving words to people of all languages.