Cldr.Calendar.Julian.quarter_of_year

You're seeing just the function quarter_of_year, go back to Cldr.Calendar.Julian module for more information.

quarter_of_year(year, month, day)

quarter_of_year(year(), month(), day()) :: 1..4

Calculates the quarter of the year from the given year, month, and day. It is an integer from 1 to 4.