With a closer look, that seems 1) against all other standards 2) only by IBM
(CUT0) (CUT0GDT) Coordinated Universal Time (CUT)
It's UTC, not CUT (and not GMT, but some people never learn).
(GMT0) (GMT0BST) United Kingdom (CUT) (WET-2) (WET-2WET) Finland (CUT +2) (MET-11) (MET-11METDT) Solomon Islands (CUT+11) (EET-10) (EET-10EETDT) Eastern Australia (CUT+10) (MEST-3) (MEST-3MEDT) Turkey (CUT +3)
WET = Western Europeean Time, UTC±0 (WEST, UTC+1) MET = Middle Europeean Time, UTC+1 (MEST, UTC+2) EET = Eestern Europeean Time, UTC+2 (EEST, UTC+3)
(WST-4) (WST-4WDT) Gorki; Central Asia; Oman (CUT +4)
WST = Western Standard Time, UTC+8 (australia) also used in Pacific/Apia, UTC-11 - not UTC+4.
I think those timezone abbreviations are AIX local. Prove me wrong?
The US abbreviations seems all correct.