pandas.Series.dt.day_of_year — pandas 2.2.3 documentation (original) (raw)

Series.dt.day_of_year[source]#

The ordinal day of the year.

Examples

For Series:

s = pd.Series(["1/1/2020 10:00:00+00:00", "2/1/2020 11:00:00+00:00"]) s = pd.to_datetime(s) s 0 2020-01-01 10:00:00+00:00 1 2020-02-01 11:00:00+00:00 dtype: datetime64[ns, UTC] s.dt.dayofyear 0 1 1 32 dtype: int32

For DatetimeIndex:

idx = pd.DatetimeIndex(["1/1/2020 10:00:00+00:00", ... "2/1/2020 11:00:00+00:00"]) idx.dayofyear Index([1, 32], dtype='int32')

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