Re: [Exim] EST vs US/Eastern Timezone setting

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Lähettäjä: Ian A B Eiloart
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Vastaanottaja: exim-users, Mark T. Valites
Aihe: Re: [Exim] EST vs US/Eastern Timezone setting
--On Friday, August 6, 2004 12:35 pm +0100 Philip Hazel
<ph10@???> wrote:

> On Thu, 29 Jul 2004, Mark T. Valites wrote:
>
>> In the rev of solaris I'm using, TZ is set to US/Eastern, not EST, and
>> setting 'timezone = US/Eastern' in my config file gives me correct
>> timestamps.
>>
>> I'm not overly familiar with the intricacies of Unix timestamps, or even
>> really sure this is an error - is this the fault of my OS or a small bug?
>
> I'm not familiar with the intricacies of all the timezones either. Nor
> indeed of how they work in Solaris. Checking on my Gentoo Linux box, I
> see that the data for "EST" is different (and smaller) from
> "US/Eastern". Looks like EST doesn't do daylight saving (at a guess).
> This was my misapprehension. Sorry about that. The whole area is very
> murky. I've made a note in case the book is ever revised.


The problem with "EST" is that it is ambiguous.

<http://www.timeanddate.com/library/abbreviations/timezones/>
    it could be either:
EST Eastern Standard Time Australia UTC + 10 hours
EST Eastern Standard Time North America UTC - 5 hours


Unfortunately, there is no standard way of representing time zones, AFAIK

> --
> Philip Hazel            University of Cambridge Computing Service,
> ph10@???      Cambridge, England. Phone: +44 1223 334714.
> Get the Exim 4 book:    http://www.uit.co.uk/exim-book

>
> --
>
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Ian Eiloart
Servers Team
Sussex University ITS