Timeline of the Hitch-Hiker Canon (General evidence)Edit
Because of the extensive time-traveling and frequent backstories that take place in the HHGtG Series, one individual timeline would be very fragmented. For example, some events in Life, the Universe, and Everything take place over two billion years before the original destruction of Earth. Another similar circumstance is that during Arthur and Ford's exile on Prehistoric Earth, only a day or so seems to pass for Trillian and Zaphod. So there are two timelines in this article. The first one takes place from the viewpoint of Arthur Dent. The second one takes place from the viewpoint of the Universe in general. The destruction of Earth in Book I is used as a reference point for both timelines. Based upon the evidence in Book III, the Destruction of Earth takes place sometime in the early 1980's. Be aware that all values are approximate. Some events in this timeline are based on the radio series and a visual timeline of such can be found here.