[tz] Greetings from Mongolia

[Paul Eggert]

Matt Johnson wrote:
> Oracle uses the IANA data.  It’s currently only Microsoft that doesn’t – at least not everywhere.

I think HP-UX is in a similar boat.  That is, although HP-UX uses the IANA tz 
data, it also has a proprietary time zone database called tztab, originally 
developed independently from the tz project.  As I understand things, HP 
continues to maintain tztab for backward-compatibility reasons, and there are 
mappings between tztab and tz names.

Sources:

tztab(4) man page for HP-UX 
<http://h20565.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c02271674>

HP-UX 11i Java - Timezone Problem with Customized tztab(4) Entry 
<http://support.hp.com/us-en/document/c02553874>