This is the 369th most frequent Estonian word.
aastaks
"For a year."
'Aastaks' is used here to indicate a duration of one year.
Ta kolis Eestisse aastaks.
He moved to Estonia for a year.
'Aastaks' is used in the context of defining the envisioned time span for the project.
See projekt on kavandatud üheks aastaks.
This project is planned for a duration of one year.
'Aastaks' functions as a time indicator, specifying a target time by which something will occur.