YouTube: SBD by Zagrom

[Currently Broken, Working on a fix, check back later]

YouTube recently removed the ability to sort search results by date.

Here are the URL codes that USED to work; Youtube seems to have gotten wise and removed these for whatever weird reason they want to prevent people from filtering in useful ways.
Sort By Date: &sp=CAI%253D
Sort By Past Hour: &sp=EgIIAQ%253D%253D

Again, these codes no longer work.

There were two ways to use this plugin. By default it will add two new buttons next to the 'filter' button on a YouTube search result (see image). As a fallback in case YouTube changes now the site loads the page, the pinned extension provides buttons as well by clicking icon in the extension in the top bar. There are settings to disable either of the buttons (sort by time or by hour).