EH>
  > Using EMX 09a fix06, I write dates to a file (UNIX dates,
  > ie. offset in secs from 00:00 01 Jan 1970).
EH>

  Strictly speaking, those are POSIX 1003.1 time values, not "UNIX" time
  values.

EH>
  >                                      As long as the
  > TZ environment variable is not set, other programs
  > reproduce what I wrote to the file.
  >
  > When the TZ environment-variable is set, EMX corrects the
  > date for gmt-offset.
EH>

  No it doesn't.  A time_t is a time_t, and (for your compiler) it is
  always a POSIX 1003.1 seconds-since-The-Epoch number.  The value of the
  TZ environment variable doesn't change the number.

  The value of the TZ environment variable changes the way that this
  number is translated into a "broken-down time" (i.e. a `struct tm') by
  the localtime() function.

  The TZ environment variable is defined by POSIX, but not all C/C++
  compilers use it the same way (or even at all), since it isn't part of
  the Standard C Language (the conversion that localtime() performs is
  implementation-defined in Standard C, AFAIAA).

  > JdeBP <
___
 X MegaMail 2.10 #0:
--- Maximus/2 3.01