timedate()

• Subject: timedate()
• From: Robert Dodier
• Date: Sat, 17 Apr 2010 10:08:57 -0600

On 4/16/10, Edwin Woollett <woollett at charter.net> wrote:

> Is there any way to set GMT hours diff
> to get timedate() to produce the pacific
> standard time?
>
> At about 4:40 pm in California, I get:
>
>   timedate();  --->  "2010-04-17 00:39:50+01:00"

I guess you have Maxima built with GCL on Windows.
GCL has a global variable SI::*DEFAULT-TIME-ZONE* which by
default is -1. You can set this to some other value, e.g.

:lisp (setq si::*default-time-zone* 7)

now I get timedate() => 2010-04-17 08:51:46-07:00

Digging around in the GCL source code, I see that the time
zone is retrieved by, I guess, a Mingw function named
GetTimeZoneInformation. I don;t know if the -1 value is a bug
in that function or in GCL or what.

Hope this helps,

Robert Dodier

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