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Dates can be weird just about anywhere.

I recently hit a bug where all data was being checked to see if it was a datetime, and python interpreted `st1` as September 1st of the current year.

https://github.com/mozilla/frost/pull/330

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Not really Python as such, it seems, but rather some third party library[1] which promises "generic parsing of dates in almost any string format". This is impossible to do correctly (what is 01/02/03?) and usually a bad idea to attempt.

[1] https://pypi.org/project/python-dateutil/

There is actually some standards here at least. 01/02/03 has one order, 01-02-03 another. The character between tells you how to read them. Not that most people know how though...

>01/02/03 has one order

It has one order in the U.S and a different one in most other countries.

Can't say I blame python or even the library; why is the code even trying to convert every string in an object, instead of just the keys that are supposed to contain dates?! Seems like a poor hack, imho.

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