Ages of the Sailor Neopets

Leslie's birthday is February 8th, 11 BN; she turns 15 in Y4. (Check the Neopian Calendar for important dates.) Work out what age Leslie is at any given point, and you can calculate the ages of any other sailor using the following:

Kara Lynn (Buzz) = Jun 2, 9 BN (Leslie -2 years 8 months)
Starlee (Gelert) = Jun 8, 9 BN (-2 years 4 months)
Maxima (Mynci) = Feb 2, 10 BN (-2 years)
Kevin (Kiko) = Feb 4, 9 BN (-2 years)
Zelda (Zafara) = Jun 8, 10 BN (-1 year 4 months)
Zoe (Peophin) = Jun 8, 10 BN (-1 year 4 months)
Jean (Shoyru) = Apr 13, 10 BN (-1 year 2 months) Bird (Eyrie) = Dec 10, 11 BN (-10 months)
Jaimie (Bruce) = Dec 5, 11 BN (-10 months)
Briana (Korbat) = Oct 14, 11 BN (-8 months)
Ko-Kira (Scorchio) = Sep 3, 11 BN (-7 months)
Tammy (Quiggle) = Jul 11, 11 BN (-5 months)
Keiko (Acara) = Jul 4, 11 BN (-5 months)
Skye (Skeith) = May 17, 11 BN (-3 months)
Melony (Moehog) = May 14, 11 BN (-3 months) Layla (Elephante) = Apr 15, 11 BN (-2 months)
Abbie (Chia) = Apr 7, 11 BN (-2 months)
Leslie (Lupe) = Feb 8, 11 BN (Leslie!)
Allie (Uni) = Feb 18, 11 BN (same)
Gyanda (Kyrii) = Jan 10, 11 BN (+1 month)
Jody (JubJub) = Nov 3, 12 BN (+3 months)
Miles (Kacheek) = Oct 3, 12 BN (+4 months)
Marieta (Tuskaninny) = Oct 5, 12 BN (+4 months)
Kintewah (Flotsam) = Jul 3, 12 BN (+7 months)
Aviva (Blumaroo) = Jun 30, 12 BN (+8 months)
Anton (Techo) = Sep 13, 13 BN (+1 year 5 months)
Gyanda (Kyrii) = Jan 10, 13 BN (+1 year 11 months)
Vicki (Nimmo) = Oct 21, 14 BN (+2 years 4 months)

Not CoINed yet:
Bones (Aisha)
Reiji (Grarrl)
Jetsam
Tori (Kau)
Isis (Lenny)
Brooke (Usul)
Naomi (Wocky)