🚀 go-pugleaf

JRS:  In article <vdCZ2p92dNiH-pn2-2EyklhxUdMUQ@localhost>, seen in
news:demon.tech.pc, Jim Backus <JHB@jita.nospam.demon.co.uk> posted at
Thu, 10 Apr 2003 19:31:37 :-
>It seems that MSDOS 6.x is aware of time zones. If the environment 
>variable TZ is not set, it apparently assumes that it is operating 
>under Pacific time zone. I haven't fully explored how this version of 
>MSDOS uses the time zone information - it doesn't change the date and 
>time, but it does have an effect on programmes that are time 
>sensitive.
>
>If anyone here has any detailed knowledge on what this version of DOS 
>does with the TZ variable, could you post it? All I could find on the 
>web related to operation of PGP and time stamping of usenet messages.

DOS knows nothing of TZ.

UNIX & C libraries and utilities, because of their origin, may well
default to California time; and may even be settable for other US time
zones - after all, nowhere else matters.

DOS translations of UNIX & C code are likely to inherit existing
defects; and may only have those parts needed for the place of
translation translated.  The GAWK that I was interested in, for example,
would accept a TZ string; but it ignored the change-date rules provided,
using only the Merkin ones.

Some programs written for DOS use these libraries - a program which goes
silly from 2038-01-19 can be assumed to do so.

 <URL:http://www.merlyn.demon.co.uk/misctime.htm#TZ>
 <URL:http://www.merlyn.demon.co.uk/js-date5.htm#DDTA>
 
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