The Zip file for this is attached to this post, below.
What it does.
When called, periodlically, from a cron job - it creates and updates an Atom/RSS 2.0 feed, of your program schedule, with this url: http://myairtimedomain.com/rss_feed/feed.xml
It is therefore self-caching and has low system impact.
The 'hourstoget' parameter contains the feed update interval in hours. and MUST match the hourly interval of the cron job or you will get unpredictable results.
Usage is then automatic but may be manually run by putting the following url in a browser: THIS IS UN-CACHED. Do not use this link for distribution! Use the feed.xml for public use!