Elo’s name day is observed on September 27th within Estonia.
The name Elo is highly unusual in the USA, where it maintains a minimal presence outside of historical immigration records. Its origin is complex, often functioning as a short form derived from longer European names, frequently carrying meanings associated with concepts of light or devotion. Historically, its US usage peaked around the turn of the 20th century, before largely fading from popular use. Classification generally defines Elo as a concise unisex name globally, appealing to both genders. The mood conveyed is strong, modern, and notably simple, suggesting an elegant yet direct personality. This rarity contributes to its unique and distinctive appeal.
| Country | Day | Month | Names |
 USA | 4 | January | Angel, Angela, Angelica, Angelina, Angeline, Angelique, Angelo, Angie, Dangelo, Deangelo, Lewis, Lou, Louie, Louis, Luis |
 Spain | 15 | January | Mauro, Raquel, Marcelo |
 Estonia | 31 | January | Meelitu, Meelit, Meelis, Meelik, Meelo, Meelu, Meeland |
| Spain | 12 | February | Modesto, Eulalia de Barcelona |
| USA | 11 | March | Alberta, Albertina, Angus, Connie, Constance, Constantine, Consuela, Consuelo, Elberta, Ramiro |
 Poland | 15 | March | Gościmir, Heloiza, Klemens, Krzysztof, Longinus, Ludwika |
| USA | 15 | March | Eloise, Lois, Louella, Louisa, Louise, Luella, Luisa, Lulu |
 Greece | 25 | March | Evaggelos, Eva, Vangelis, Lili |
 Lithuania | 2 | April | Elona, Jostautas, Jostaute, Pranas, Pranciskus |
| Spain | 5 | June | Eloisa, Marcia, Igor, Valeria, Nicanor, Doroteo, Bonifacio |
| USA | 7 | June | Keenan, Melody, Nidia, Nydia, Nylene, Whitney |
 Finland | 14 | June | Kielo, Pihla |
| USA | 27 | June | Lacey, Laci, Lacie, Lacy, Lance, Lancelot, Schuyler, Skye, Skylar, Skyle |
 Sweden | 30 | June | Elof, Leif |
| USA | 2 | July | Othello, Otis, Otto, Penelope, Penny, Petunia |
| Poland | 9 | July | Anatolia, Heloiza, Hieronim, Łucja, Lucja, Ludwika, Lukrecja, Mikołaj, Patrycjusz, Weronika, Wszebąd, Zenon, Zenona |
| Spain | 15 | July | Carmelo, Carmela, Hilario, Hilaria, Fausto |
| USA | 16 | July | Carmel, Carmela, Carmelo, Carmen, Shelby, Sherman, Sherwood |
 France | 28 | August | Augustin, Elouan |
| Greece | 1 | September | Simeon, Ourania, Penelope, Joshua, Mando, Clea, Aspasia, Antigoni, Margaret, Athina |
 Slovakia | 3 | September | Belo |
| USA | 15 | September | Delora, Delores, Dolores, Lola, Lolita |
| France | 1 | October | Ariel, Mélodie, Muriel, Thérèse |
| Estonia | 2 | October | Leelo, Leela, Leeli |
| France | 22 | October | Elodie, Salomé, Sara |
 Hungary | 22 | October | Előd |
 Austria | 30 | October | Alfons, Angelo, Dieter |
| Spain | 1 | November | Benigno, Penélope |
| Greece | 8 | November | Angela, Angelo, Stamatis, Stamos, Michael, Michelle, Metaxia, Gabriel |
| Spain | 1 | December | Adelaida, Eloy, Hugo |
 Italy | 3 | December | B. Francesco Saverio Seelos |