Hacking the WordPress Calendar Widget

I’m fine-tuning my WordPress multisite blog installation. A blog is designed to look into the past, not the future. While it was a simple matter to turn MovableType into a rudimentary course management system by simply post-dating blog entries, WordPress goes out of its way to hide future content. I use the plugin “No Future Posts” to make future-dated posts appear on the site, but the calendar widget is designed…