Country | Day | Month | Names |
Croatia | 29 | January | Vilana, Valerije, Konstancije |
Latvia | 17 | February | Auce, Donats, Konstance |
Poland | 17 | February | Donat, Donata, Franciszek, Izydor, Julian, Konstanty, Łukasz, Niegomir, Sylwin, Zbigniew, Zbyszko |
Poland | 18 | February | Albert, Alberta, Albertyna, Fryda, Konstancja, Krystiana, Maksym, Sawa, Sylwan, Sylwana, Symeon, Więcesława, Zula, Zuzanna |
Poland | 25 | February | Bolebor, Cezary, Konstancjusz, Maciej, Małgorzata, Modest, Nicefor |
Latvia | 11 | March | Agita, Konstantins |
Lithuania | 11 | March | Gedimtas, Konstantinas, Vijole |
Poland | 11 | March | Benedykt, Drogosława, Edwin, Kandyd, Konstanty, Konstantyn, Prokop, Rozyna, Sofroniusz |
Bulgaria | 21 | May | Elena, Konstantin, Kosta, Kostadin, Kostadinka, Lenko, Dicho, Lenko, Dinko, Elenko, Eli, Elin, Elka, Ilona, Kojcho, Kostadina, Kostadinko, Kuncho, Stamen, Stanimir, Stanimira, Stanka, Stoil, Stoyan, Stoian, Stoyanka, Trayko, Dinko |
Estonia | 21 | May | Konstantin, Kostel, Tiino, Kindel |
Greece | 21 | May | Konstantinos, Kostas, Tina, Dina, Eleni, Helen |
Hungary | 21 | May | Konstantin |
Sweden | 21 | May | Conny, Konstantin |
Poland | 3 | June | Cecyliusz, Ferdynand, Klotylda, Konstantyn, Laurencjusz, Laurentyn, Laurentyna, Leszek, Paula, Tamara, Wawrzyniec |
Poland | 29 | July | Beatrice, Beatrycze, Beatryks, Cierpisław, Faustyn, Konstantyn, Lucylla, Maria, Marta, Olaf, Serafina, Urban |
Poland | 26 | August | Dobroniega, Joanna, Konstanty, Maksym, Maria, Wiktorian, Zefir, Zefiryn, Zefiryna |
Lithuania | 10 | September | Girminte, Konstancija, Koste, Mikalojus, Tautgirdas |
Norway | 19 | September | Connie, Konstanse |
Poland | 19 | September | Alfons, Alfonsyna, January, Konstancja, Sydonia, Teodor, Więcemir |
Slovakia | 19 | September | Konštantín |
Poland | 5 | October | Apolinary, Częstogniew, Donat, Donata, Faust, Fides, Flawia, Igor, Justyn, Konstancjusz, Konstans, Placyd |
Poland | 30 | November | Andrzej, Justyna, Konstanty, Maura, Zbysława |