From: Stuart Clarke <stuart.clarke1986@...>
Date: 2010-08-21T05:06:17+09:00
Subject: Re: Dealing with dates & timezones

R.. Kumar 1.9.1 OSX wrote:
> 
>> 
>> tz = TZInfo::Timezone.get(Choice.choices[:from])
>> tz1 = TZInfo::Timezone.get('Asia/Calcutta')
>> #local = tz.utc_to_local(Time.utc(2008,9,4,14,00,0))
>> unparsed.each {|timestr|
>>   puts timestr                                  [1]
>>   local = tz.local_to_utc(Time.parse(timestr))
>>   puts tz1.utc_to_local(local)                  [2]
>> }
>> (you would not need to loop. unparsed refers to ARGV on command line)
> 
> Please note in the above program, i am always converting incoming time 
> to time in Asia/Calcutta. However, the incoming time (time "from" can be 
> passed on the command line).
> 
> tz is time_zone from
> tz1 is time_zone to (calcutta)
> 
> [1] is what the user entered such as "12:00 AM"
> [2] is converted time in Asia/Cal.
> 
> I hope this helps.

Thanks a lot for getting back to me. The first problem I have noticed 
but have sorted out is the format of my date using the following code I 
first convert - "Sunday, 15 August 2010 05:46:50 o'clock BST" into this 
- "Sun, 15 Aug 2010 05:46:50 +0100"


d = "Sunday, 15 August 2010 05:46:50 o'clock BST"
dateparts = ParseDate.parsedate("#{d}")
d = 
Time.mktime("#{dateparts[0]}","#{dateparts[1]}","#{dateparts[2]}","#{dateparts[3]}","#{dateparts[4]}","#{dateparts[5]}")
done = d.strftime("%a, %d %b %Y %H:%M:%S %Z")

I then go into the code you suggested:

me =TZInfo::Timezone.get('Europe/London')
utctime = Time.parse(done).utc
puts me.utc_to_local(utctime)

This then gives me

Sun Aug 15 06:46:50 UTC 2010

Is my code and logic correct?

Many thanks
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