This is the 236th most frequent Serbian word.
почетком
The Serbian word "почетком" means "at the beginning of" in English.
Here, 'почетком' is used as an adverbial phrase indicating the time when the action took place, referring to the start of the year.
Почетком године смо почели нови пројекат.
At the beginning of the year, we started a new project.
Here, 'почетком' locates the action within the initial phases of the month indicated (March).
Извештај ћемо завршити почетком марта.
We will finish the report at the beginning of March.
In this case, 'почетком' functions similarly, pinpointing a specific time at the start of the referenced period (next week).