ruby - Convert time to other timezone

Question

I have a datestring in this format yyyy-mm-ddThh:mm:ss[Z]

And i have a timezone string. for e.g "Asia/Kolkata"

Now i want to convert this date string into the timezone of the given timezone

for e.g. if the date is 2014-01-03T23:30:00Z , then in "Asia/Kolkata" timezone it will be 2014-01-04T05:00:00 .

I tried using Time library , but Time library does not seem to have any method which can convert to other timzone http://ruby-doc.org/core-1.8.6/Time.html#method-c-mktime .

Answer 1

You should use the TZInfo gem.

require 'tzinfo'

tz = TZInfo::Timezone.get('Asia/Kolkata')
utc = DateTime.iso8601('2014-01-03T23:30:00Z')
local = tz.utc_to_local(utc)