Affects Version/s: None
Fix Version/s: 4.0.0
Currently dates that belong to Julian calendar (before Oct 15, 1582) are handled improperly by date/timestamp UDFs.
E.g. DateFormat UDF:
Although the dates are in Julian calendar, the formatter insists to print these according to Gregorian calendar causing multiple days of difference in some cases:
I've observed similar problems in the following UDFs: