Calendar.ISO.quarter_of_year

You're seeing just the function quarter_of_year, go back to Calendar.ISO module for more information.
Link to this function

quarter_of_year(year, month, day)

View Source (since 1.8.0)

Specs

quarter_of_year(year(), month(), day()) :: quarter_of_year()

Calculates the quarter of the year from the given year, month, and day.

It is an integer from 1 to 4.

Examples

iex> Calendar.ISO.quarter_of_year(2016, 1, 31)
1
iex> Calendar.ISO.quarter_of_year(2016, 4, 3)
2
iex> Calendar.ISO.quarter_of_year(-99, 9, 31)
3
iex> Calendar.ISO.quarter_of_year(2018, 12, 28)
4