dan-blanchard commented on issue #18139: [SPARK-20787][PYTHON] PySpark can't handle datetimes before 1900 URL: https://github.com/apache/spark/pull/18139#issuecomment-454155032 A backward compatible fix would be to use the `tzlocal` library to get the local timezone info: ```py In [26]: import calendar, time In [27]: import datetime as dt In [27]: import tzlocal In [28]: local_tz = tzlocal.get_localzone() In [29]: dt1 = dt.datetime.now() In [30]: calendar.timegm(local_tz.localize(dt1).utctimetuple()) Out[31]: 1547498530 In [31]: calendar.timegm(local_tz.localize(dt1).utctimetuple()) == time.mktime(dt1.timetuple()) Out[31]: True In [32]: dt2 = datetime(1899, 1, 1) In [33]: calendar.timegm(local_tz.localize(dt2).utctimetuple()) Out[33]: -2240507040 ```
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