If you're using date/time formats in Ruby, Python, C or PHP, this website is pretty slick for testing your formats.
heroku_san + ruby 2.0
If you are using heroku_san with a ruby 2.0.0 app and you get deployment failures and the message is:
"Your Ruby version is 1.9.3, but your Gemfile specified 2.0.0"
You need to edit /usr/local/heroku/bin/heroku
and change the shebang line:
So that the heroku toolbelt runs with the ruby version invoked locally in your rbenv/rvm environment.