railscasts/383-uploading-to-amazon-s3 — pull request #2 by marks (2013-08-09 15:48:59+00:00)
Title: Changing expiration to use UTC time and ISO-8601 format. This solved iss...

...ues I was having with an app I had implemented user timezones

To implement time zones, I followed http://railscasts.com/episodes/106-time-zones-revised