When should baby start clap hands

We have visited Kate’s home today. Lucy and puppy was there and they both are little bit older then Aurora, they both can clap hands, but Aurora dont, we have been teach Aurora how to clap hands around few month already,  we walked to home after 4pm , around dinner time i had little  chat with Alan telling him why Aurora not start clap hand yet. just at this moment Aurora start clap hers clap hands , we looked each other laughed ….

Aurora today is 9 month +1 weeks old