All thoroughbreds have the same birthday so that their ages can be standardized for comparison because of the historical lack of records of actual birthdays. All thoroughbred horses celebrate their bi

All thoroughbreds have the same birthday so
that their ages can be standardized for
comparison because of the historical lack of
records of actual birthdays. All thoroughbred
horses celebrate their birthday on the same
date, January 1 in the Northern hemisphere and
August 1 in the Southern hemisphere.
https://www.onlymelbourne.com.au
Horses' Birthday 2021 Only Melbourne