Manta's name day is October 26 in Finland.
Manta is an exceptionally rare name globally, with very limited usage in the United States and abroad. It is primarily inspired by the marine animal, giving it a strong nature-like and aquatic tone that is both soft and elegant. Because of its scarcity, it does not have a traditional historical background as a common given name. It is generally regarded as a unisex option, suitable for anyone, due to its fluid sound and lack of strict gendered conventions. The name projects a peaceful and modern vibe, appealing to those who prefer unique, minimalist, and elemental choices. It remains a distinctive name that stands apart from mainstream naming trends.
| Country | Day | Month | Names |
 Lithuania | 4 | January | Arimantas, Arimante, Benedikta, Titas |
| Lithuania | 23 | January | Algimantasp, Gailgedas, Gunda, Raimundas |
| Lithuania | 25 | January | Jaunutis, Jomantas, Povilas, Viltenis, Ziede |
| Lithuania | 26 | January | Daugis, Eigile, Justas, Rimantas |
| Lithuania | 31 | January | Astra, Budvile, Marcele, Skirmantas |
| Lithuania | 4 | February | Andrius, Arvile, Gustas, Joana, Vydmantas |
| Lithuania | 8 | February | Daugvile, Dromantas, Honorata, Saliamonas |
| Lithuania | 24 | February | Gedmantas, Goda, Motiejus |
| Lithuania | 25 | February | Margiris, Rasa, Regimantas, Viktoras |
| Lithuania | 8 | March | Beata, Gaudvile, Laima, Vydmantas |
| Lithuania | 9 | March | Dominykas, Pranciska, Visgaile, Zygimantas |
| Lithuania | 14 | March | Darmantas, Karigaile, Matilda |
| Lithuania | 20 | March | Filomenas, Imgarda, Irma, Tautvile, Zygimantas |
| Lithuania | 24 | March | Daumantas, Donardas, Gabrielius, Ganvile, Liucija |
| Lithuania | 25 | March | Bermantas, Kantrimas, Normantas, Normante |
| Lithuania | 30 | March | Ferdinandas, Gvidonas, Meda, Rusne, Virmantas |
| Lithuania | 12 | April | Damijonas, Galmantas, Julius, Jurate |
| Lithuania | 25 | April | Grazvyda, Grazvyde, Morkus, Tolmantas, Zadmante |
| Lithuania | 29 | April | Augustinas, Indre, Rita, Tarmantas |
| Lithuania | 1 | May | Vydmante, Zigmantas, Zigmas, Zilvinas |
| Lithuania | 2 | May | Atanazas, Eidmantas, Meile |
| Lithuania | 16 | May | Bite, Ubaldas, Vaidmantas |
| Lithuania | 22 | May | Aldona, Eimantas, Elena, Julija, Rita |
| Lithuania | 24 | May | Gerardas, Gina, Vilmantas |
| Lithuania | 25 | May | Almantas, Danute, Urbonas |
| Lithuania | 26 | May | Algimantas, Eduardas, Milvyde, Vilhelmina |
| Lithuania | 11 | June | Aluona, Flora, Ramintas, Tvirmantas |
| Lithuania | 11 | July | Kipras, Kiprijonas, Pijus, Sarune, Vilmantas |
| Lithuania | 15 | July | Gerimante, Mantas, Rozalija, Roze |
| Lithuania | 4 | August | Domantas, Gerimantas, Irta, Milgede |
| Lithuania | 10 | August | Aiste, Asterija, Astra, Laurynas, Norimantas |
| Lithuania | 18 | August | Gendvile, Ilona, Mantautas, Sailenis, Saulene |
 Latvia | 19 | August | Imanta, Marlene, Melanija |
| Lithuania | 23 | August | Girmantas, Pilypas, Tautgaile |
| Lithuania | 31 | August | Raimunda, Raimundas, Vilmantas, Vilmante |
| Lithuania | 13 | September | Barmantas, Barvyde, Mangailis |
| Lithuania | 15 | September | Eugenija, Nikodemas, Rimgaile, Vismantas |
| Lithuania | 30 | September | Bytaute, Jeronimas, Sofija, Zymantas |
| Lithuania | 1 | October | Benigna, Mantas, Minte, Remigijus |
| Lithuania | 6 | October | Brunonas, Budvydas, Eismantas, Vytene |
| Lithuania | 3 | November | Hubertas, Narvaine, Silvija, Vydmantas |
| Lithuania | 6 | November | Asmantas, Leonardas, Vygaude |
| Lithuania | 12 | November | Alvile, Asmantas, Kristinas, Renata |
| Lithuania | 14 | November | Emilis, Judita, Ramantas, Saulene |
| Lithuania | 21 | November | Alberta, Eibarte, Gomantas, Honorijus |
| Lithuania | 27 | November | Girvyde, Skomantas, Virgilijus |
| Lithuania | 6 | December | Bilmantas, Mikalojus, Norvyde |
Finland