idx1 = pd.date_range('2010-01-01', '2010-12-31', freq='D')
idx2 = pd.date_range('2010-01-01', '2010-11-01', freq='D')
idx3 = pd.date_range('2010-01-01', '2010-12-31', freq='D')
Ensure two Pandas DatetimeIndexes are the same?