Experimental Physics and
Industrial Control System

Jeong Han Lee <[email protected]> · Sat, 23 Sep 2017 22:37:57 +0200

Hi Andrew,

 The new wording is the sufficient solution for me. I appreciate your

help with my small request.

   Best,
   Han

On 09/22/2017 06:16 PM, Andrew Johnson wrote:

Hi Han,

On 09/22/2017 03:00 AM, Jeong Han Lee wrote:

# Time service:
# EPICS_TIMEZONE
#    Local timezone info for vxWorks and RTEMS.  The format is
#        <name>::<minutesWest>:<start daylight>:<end daylight>
#    where the start and end are mmddhh - that is month,day,hour
#    e.g. for ANL in 2018: EPICS_TIMEZONE=CUS::360:031102:110402
#    The future dates below assume the rules don't get changed;
#    see http://www.timeanddate.com/time/dst/2018.html to check.
#
---- snip snip -----

    I think, it uses the time zone abbreviation as <name>. And I could
find them quite easily and quickly, However, if we can have the link in
that file (CONFIG_SITE_ENV) in the same way of DST, for example,

```
<name> is the Time Zone Abbreviation;
see https://en.wikipedia.org/wiki/List_of_time_zone_abbreviations
```
it may give users an easy way to access them.

The <name> part of that string is arbitrary; the OS only uses it in the
output generated when converting a timestamp to a string with a %Z
format string, so it doesn't really matter what you put in there as long
as you understand that name locally (assuming you even use %Z in your
conversion formats). With that in mind I don't think we need to provide
a link to a standard list of time-zone names, but I will document the
fact that <name> is used only for %Z. Here's my new wording:

# Time service:
# EPICS_TIMEZONE
#	Local timezone info for vxWorks and RTEMS.  The format is
#	    <name>::<minutesWest>:<startDST>:<endDST>
#	where <name> is only used by strftime() for %Z conversions,
#	and <startDST> and <endDST> are mmddhh - that is month,day,hour
#	e.g. for ANL in 2018: EPICS_TIMEZONE=CUS::360:031102:110402
#	The future dates below assume the rules don't get changed;
#	see http://www.timeanddate.com/time/dst/2018.html to check.

Is that a sufficient solution?

- Andrew

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System