The following are all the timezones in Ruby on Rails 3 (as of Rails 3.0.5)
We can set it in config/application.rb, as
config.time_zone = 'Pacific Time (US & Canada)'
Note that it needs to be the exact string -- if we use:
config.time_zone = 'Pacific Time' # NOT GOOD
it will stop the server from starting up.
The line Time.zone = 'Pacific Time (US & Canada)' can change the time zone in view, but in the controller, the time zone will still be UTC.
The way to get all Time Zones in Rails is:
$ rake time:zones:all
* UTC -11:00 *
International Date Line West
Midway Island
Samoa
* UTC -10:00 *
Hawaii
* UTC -09:00 *
Alaska
* UTC -08:00 *
Pacific Time (US & Canada)
Tijuana
* UTC -07:00 *
Arizona
Chihuahua
Mazatlan
Mountain Time (US & Canada)
[...]
* UTC +00:00 *
Casablanca
Dublin
Edinburgh
Lisbon
London
Monrovia
UTC
[...]
* UTC +08:00 *
Beijing
Chongqing
Hong Kong
Irkutsk
Kuala Lumpur
Perth
Singapore
Taipei
Ulaan Bataar
Urumqi
[...]