All of my furkids are rescues and I only know Cirrus's actual birthday so the rest are guesses.

Storm- adopted at 1 year now 8 years old
Sunny- adopted at 8 months now almost 4 years old- his birthdays in late August
Cirrus- adopted at 8 months old and now 2 years old
Sky- adopted at 1 year old and now 2 years old

RB Pepper- adopted at 9 weeks old and lived to be almost 6 years old