pandas.DatetimeIndex.dayofyear#

propertyDatetimeIndex.dayofyear[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年01月01日 10:00:00+00:00
1 2020年02月01日 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')