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Name days
Name: Konstantin
| Country | Month | Day | Name days |  Bulgaria | May | 21 | 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 | May | 21 | Konstantin, Kostel, Tiino, Kindel |  Greece | May | 21 | Konstantinos, Kostas, Tina, Dina, Eleni, Helen |  Hungary | May | 21 | Konstantin |  Latvia | March | 11 | Agita, Konstantins |  Lithuania | March | 11 | Gedimtas, Konstantinas, Vijole |  Slovakia | September | 19 | Konštantín |  Sweden | May | 21 | Conny, Konstantin |
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