Date.quarter_of_year
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quarter_of_year
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Specs
quarter_of_year(Calendar.date()) :: non_neg_integer()
Calculates the quarter of the year of a given date
.
Returns the day of the year as an integer. For the ISO 8601 calendar (the default), it is an integer from 1 to 4.
Examples
iex> Date.quarter_of_year(~D[2016-10-31])
4
iex> Date.quarter_of_year(~D[2016-01-01])
1
iex> Date.quarter_of_year(~N[2016-04-01 01:23:45])
2
iex> Date.quarter_of_year(~D[-0015-09-30])
3