pandas.DatetimeIndex.day_name#

DatetimeIndex.day_name(locale=None)[source]#

Return the day names with specified locale.

This method returns the full name of the day of the week (e.g., “Monday”, “Tuesday”) for each datetime value in the Series/Index. The names can be localized to different languages using the locale parameter.

Parameters:

localestr, optional: Locale determining the language in which to return the day name. Default is English locale ('en_US.utf8'). Use the command locale -a on your terminal on Unix systems to find your locale language code.

Returns:

Index: Index of day names.

See also

DatetimeIndex.month_name: Return the month names with specified locale.

Examples

>>> idx = pd.date_range(start="2018-01-01", freq="D", periods=3)
>>> idx
DatetimeIndex(['2018-01-01', '2018-01-02', '2018-01-03'],
              dtype='datetime64[us]', freq='D')
>>> idx.day_name()
Index(['Monday', 'Tuesday', 'Wednesday'], dtype='str')

Using the locale parameter you can set a different locale language, for example: idx.day_name(locale='pt_BR.utf8') will return day names in Brazilian Portuguese language.

>>> idx.day_name(locale="pt_BR.utf8")
Index(['Segunda', 'Terça', 'Quarta'], dtype='str')