From: Nathan Beyer <nbeyer@...>
Date: 2012-08-30T09:52:07+09:00
Subject: Re: how do extract timezone from datetime object?

I was going to suggest converting to a Time via DateTime#to_time, so
you could use Time#utc_offset / 3600, but 'to_time' doesn't preserve
the timezone. There is a Datetime#offset that you can use, but i
returns a Rational that's a fraction, so you can do something like
this -

1.9.3p194 :018 > dt = DateTime.parse( "Wed, 29 Aug 2012 17:26:44 -0700" )
 => #<DateTime: 2012-08-29T17:26:44-07:00
((2456170j,1604s,0n),-25200s,2299161j)>
1.9.3p194 :019 > dt.offset.numerator
 => -7

That seems a bit wonky though.

On Wed, Aug 29, 2012 at 7:32 PM, Dan Quach <lists@ruby-forum.com> wrote:
> I'm working on an external interface where a partner website is giving
> us date time as strings.
>
>>> dt = DateTime.parse( "Wed, 29 Aug 2012 17:26:44 -0700" )
> => Wed, 29 Aug 2012 17:26:44 -0700
>>> dt.strftime( "%z" )
> => "-0700"
>
> What I have to do is extract the UTC time zone.  So in the prior example
> I need an integer of -7. (UTC-7) in this scenario.
>
> Is there some easy way of doing this?
>
> thanks!
>
> --
> Posted via http://www.ruby-forum.com/.
>