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Ime dni
Ime: Nikolai
| Država | Mesec | Dan | Ime dni |  Bolgarija | December | 6 | Nikola, Nikolai, Nina, Kolyo, Nenka, Niko, Nikolay, Nikolina, Nitza |  Estonija | December | 6 | Nigulas, Nigul, Nikolai, Niilas, Niilo, Nils, Klaus, Laas, Laus |  Norveška | December | 6 | Nikolai, Nils |
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