[Zope] Modifying DateTime.py to include additional timezones

[Richard Ettema]

Hi,

Can someone explain the layout/use of the timezone lists in DateTime.py or
point me in the direction of a how-to etc.
I would like to understand the layout of the _zlst and _zmap listings, and
how to add new locations to it including Daylight Savings.

What do these relate to and stand for...

           'UT','BST','MEST','SST','FST','WADT','EADT','NZDT',
           'WET','WAT','AT','AST','NT','IDLW','CET','MET'...etc

Some of them I can recognise like New Zealand Std Time (NZST) but others
aren't. Is there some reason these aren't provided with a full description
like the list above it with...

           'Brazil/Acre','Brazil/DeNoronha','Brazil/East',
           'Brazil/West','Canada/Atlantic'....etc

The same question for the Australian timezones...

           'aest':'GMT+1000', 'aedt':'GMT+1100',
           'aus eastern standard time':'GMT+1000',
           'sydney standard time':'GMT+1000'...etc

Thanks for any help.

Richard