This is the 146th most frequent Croatian word.
jednog
"Jednog" is the genitive or accusative singular masculine form of "jedan," meaning "one" or "a/an" in English.
The word 'jednog' is used in the genitive singular masculine form to describe 'trenutka' (moment), indicating a specific moment that is characterized as beautiful.
Prisjetio se jednog lijepog trenutka iz djetinjstva.
He recalled a beautiful moment from his childhood.
The word 'jednog' is used here in the genitive singular masculine form to modify the noun 'dana' (day), expressing a single, unspecified day in the future.
Jednog dana ću posjetiti Pariz.
One day I will visit Paris.
In this sentence, 'jednog' is in the genitive singular masculine form, modifying 'popodneva' (afternoon), to refer to an unspecified afternoon in the future.