I'm not sure where this in_time_zone method comes from. Can you provide a standalone script that we can run?

@headius It's from rails:

Here's a snippet that should run

gem 'rails', '4.2.8'
require 'rails'

puts "#{DateTime.now.in_time_zone('Eastern Time (US & Canada)') == DateTime.now.utc} should be true"

Confirmed on jruby-9.1 branch as well.

Still failing on current JRuby master (9.2).

let's have it - this is slightly 🤧 since one should never expect a time clock to return the same
... just because its on the same line, teste the following script:

require 'date'
require 'active_support/all'

puts ActiveSupport::VERSION::STRING

now = DateTime.now
puts inz = now.in_time_zone('Eastern Time (US & Canada)')
puts utc = now.utc

puts inz == utc

9.2 (master) output:

4.2.10
2018-05-24 05:24:43 -0400
2018-05-24T09:24:43+00:00
true

same with 9.1.16.0 + AS 5.1 :

5.1.6
2018-05-24 05:27:39 -0400
2018-05-24 09:27:39 UTC
true