pandas.DatetimeIndex.union

DatetimeIndex.union(other) [source]

Specialized union for DatetimeIndex objects. If combine overlapping ranges with the same DateOffset, will be much faster than Index.union

Parameters:	other : DatetimeIndex or array-like
Returns:	y : Index or DatetimeIndex

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Licensed under the 3-clause BSD License.
https://pandas.pydata.org/pandas-docs/version/0.21.1/generated/pandas.DatetimeIndex.union.html