strftime reference and sandbox for Ruby, Python, PHP
Whenever I want to format a date or time in Ruby, or add a format to DATE_FORMATS in a Rails app, I resort to Google to look up the options for the strftime function. I’ve never really been happy with the quality or readability of the references that are on the web, so I made my own along with a simple sandbox to try different formats with the current time.
Check out http://strfti.me and let me know if you find it useful!