When does Badlands Rumble take place? With regards to the rest of the anime series, when does Badlands Rumble take place? Does it happen before the show? After? In the middle some time?
According to this Anime News Network review, Badlands Rumble is canon and occurs "between episodes 9 and 11 (after Vash has met Wolfwood, but before Legato closes in)". See the second paragraph of the "Review" section. However, as they point out, the movie's style doesn't quite match that of the anime at that time, given the higher budget, so it may be better not to worry about when it occurs.

Edit: as atlantiza points out below, the author of this review doesn't cite a source. Until I can find a better source, you should take that with a grain of salt.