| Country | Day | Month | Names |
 Latvia | 11 | January | Arkadijs, Franciska, Smaida |
 Croatia | 12 | January | Arkadije, Živana, Ernest |
 Poland | 12 | January | Antoni, Arkadiusz, Arkady, Benedykt, Czech, Czechasz, Czechoń, Czesław, Czesława, Ernest, Ernestyn, Greta, Reinhold, Tycjan |
 Ukraine | 26 | January | Arkadiy, Arkad, Maya, May |
| Poland | 4 | March | Adrian, Adrianna, Arkadiusz, Arkady, Eugeniusz, Kazimierz, Lew, Łucja, Lucja, Lucjusz, Wacław, Wacława |
| Latvia | 6 | July | Andzs, Anrijs, Arkadijs, Druvvaldis |
 Greece | 29 | August | Arkadios |
 Lithuania | 13 | November | Arkadijus, Eirima, Norvydas |
| Poland | 13 | November | Arkadiusz, Arkady, Brykcjusz, Eugeniusz, Jan, Mikołaj, Stanisław, Walentyn |
 USA | 21 | November | Cade, Cadell, Cadence, Caden, Caiden, Cayden, Kade, Kaden, Kadence, Kadin, Kadyn, Kaiden, Kayden, Kaydence, Valda, Velda |
| Lithuania | 9 | December | Gedene, Leokadija, Vakaris, Valerija |
| Poland | 9 | December | Delfina, Joachim, Joachima, Leokadia, Loda, Waleria, Wielisława, Wiesław |
Estonia