This is the 642nd most frequent Estonian word.
aasta
The Estonian word "aasta" means "year" in English.
Here, 'aastal' also indicates a time frame in the future, showing the temporal use of 'aasta' in the adessive case.
Ta plaanib minna puhkusereisile järgmisel aastal.
He plans to go on a vacation next year.
In this sentence, 'aastal' is the adessive case form of 'aasta', indicating the time when the event happened.
Ma lõpetasin kooli eelmisel aastal.
I graduated school last year.
Here, 'aasta' is used to refer to the current year in a nominative case, acting as the subject of the sentence.