How to create a Ruby DateTime from existing Time.zone for Rails?

Try:

Time.zone = "Pacific Time (US & Canada)"
Time.zone.parse('8-11-2013 23:59:59') #=> Fri, 08 Nov 2013 23:59:59 PST -08:00 

OR

Time.now.in_time_zone("Pacific Time (US & Canada)")

OR

DateTime.now.in_time_zone("Pacific Time (US & Canada)")