A Simple Date Duration Calculator

Current date is:
Simple Calc: Enter two dates.

Start date:
End date:

Multi Calc: Enter two dates. Calculate as many times as you want. Previous calculations will not be removed.

Start date:
End date:

 
A Simple Date Duration Calculator is a small project incorporating the Workless framework, jQuery, jQueryUI, and a little bit of PHP.

In the interest of security, I decided to forgo file uploading, but instead have a sample file that my calculator script will parse and calculate against the current date. Switching between timezones will also asynchronously update the file-based calculations. There are several hours of date difference between PST and ICT timezones; the file-based calculations will differ by one day during these hours.