Both our cats are rescues. So we don't know their exact birthday. But we asked the vet and then we chose a day . Maya was found in July and was about 5,5 months old. So we took February 1st as her special day.
Inka was found in October, guessed to be 6 weeks. We chose August 27 for her.
Our first cat Sydney (at RB) came from friends; he was born exactly on August 15th.
On the cats's birthday, we give them their favorite food, and a new toy