This is the 4441st most frequent Polish word.
kalendarzowy
Relating to a calendar.
In this case, 'kalendarzowy' specifies the type of year, emphasizing its alignment with the calendar.
Wrzesień to dziewiąty miesiąc roku kalendarzowego.
September is the ninth month of the calendar year.
The word 'kalendarzowy' is used to describe the type of year, specifying that it is based on the calendar.
W roku kalendarzowym mamy dwanaście miesięcy.
In a calendar year, we have twelve months.
Here, 'kalendarzowy' characterizes the plan, indicating it is related to the calendar.