http://www.moshiach.ru/jdate.php

This script converts Gregorian dates to Jewish dates. Besides, it sends reminders to the registered users about the dates they entered several days before the date (according to the users' choice). The script has its own small CMS. All in all, this project included:
a. programming the script converting the dates
b. planning and programming the front-end and the back-end
c. programming the script sending reminders to the registered users

the script was inserted into a fuctioning web site