beş yılda bir olan

listen to the pronunciation of beş yılda bir olan
Турецкий язык - Английский Язык
quinquennial
that lasts for five years
a fifth anniversary
{a} lasting or happening in 5 years
that happens every five years
A quinquennial event
Occurring once in five years, or at the end of every five years; also, lasting five years
a five year period