BUG: Constructing Timestamp from local time + offset + time zone yields wrong offset · Issue #7833 · pandas-dev/pandas (original) (raw)

xref #7825

In [1]: import pandas as pd

In [2]: pd.Timestamp('2013-11-01 00:00:00-0500', tz='America/Chicago') Out[2]: Timestamp('2013-10-31 23:09:00-0551', tz='America/Chicago')

This bug is inherited from datetime, which is using local mean time (the first entry for America/Chicago in tzinfo).