What Olson time zones *aren't* supported?

Asked by Danek Duvall on 2013-09-20

The webpage says that almost all the Olson time zones are supported, but it doesn't say which aren't, or which might not be, or why. Is this just a statement that it might be behind the latest drop from IANA, or is it more meaningful?

Question information

Language:
English Edit question
Status:
Solved
For:
pytz Edit question
Assignee:
No assignee Edit question
Solved by:
Stuart Bishop
Solved:
2013-09-23
Last query:
2013-09-23
Last reply:
2013-09-21
Best Stuart Bishop (stub) said : #1

It does not support Riyadh from 1987-1989. During this time, I think this region was officially on solar time and the DST offset was constantly changing. The Olson database supports this DST offset changes every 5 seconds, but it is too much for pytz to cope with.

It also skips 'Factory', 'localtime' and 'posixrules' for reasons I don't recall.

Danek Duvall (danek-duvall) said : #2

Thanks Stuart Bishop, that solved my question.