More War Propaganda? Downed Plane Presented As Evidence Gaddafi Is Not Observing Ceasefire

As the reporter in the following Sky News video helpfully explains, this proves that Gaddafi is not observing a ceasefire, paving the way for Western military action against Libya.

Here is another video of the plane:

http://www.youtube.com/watch?v=fMd99K-yD-I&feature=player_embedded

But hang on.

Exactly when was this plane shot down?

Here is a video of a downed jet close to Bengazi that was posted two days ago on March 17, BEFORE the ceasefire was announced.