January:
Gai 1st
Iwashi 2nd
Hiashi 8th
Hizashi 8th
Haku 9th
Gaara 19th
Shino 23rd
...
February:
3rd Hokage 8th
Sigure 11th
Yoroi 21st
Kabuto 29th (on leap year) March:
Kabuto 1st
Ebisu 8th
Tenten 9th
Ibiki 20th
Hanabi 27th
Sakura 28th
Kazekage 29th
April:
Sinobi 1st
Tonbo 4th
Tazuna 5th
Waraji 6th
Gatou 30th
May:
Choji 1st
Tsunami 4th
Midare 7th
Kankuro 15th
Iruka 26th
Baiu 30th
June:
Demon Brothers 6th
Itachi 9th
Kurenai 11th
Dosu 12th
July:
Neji 3rd
Baki 4th
Kin 6th
Akamaru 7th
Kiba 7th
Gemma 17th
Kotetsu 21st
Sasuke 23rd
...
August:
Zabuza 15th
Kaiza 21st
Temari 23rd
Raido 28th
September:
Koharu 1st
Aoba 3rd
Zaku 14th
Kakashi 15th
Shikamaru 22nd
Ino 23rd
October:
Naruto 10th
Suzume 18th
Asuma 19th
Mizuki 21st
Orochimaru 24th
Anko 27th
November:
Hayate 2nd
WindCountryLord 5th
Jiraiya 11th
Mubi 15th
Kagari 16th
Lee 27th
December:
Zouri 1st
Oboro 20th
Inari 25th
Hinata 27th
Konohamaru 30th