The world in which Climbing Torches takes place has a lot of history, most of which is contained within my head. This is my attempt to make a timeline of it, and of the comic. There may eventually be spoilers.
July 21, 1861: Battle of Bull Run; American Civil War begins.
May 2, 1998: Battle of Hogwarts. Black Mesa Incident causes the Combine to start their 19 years of raids on Earth. Explosion at the Aperture Science Enrichment Center.
June 25, 2017: The elves find the One Fidget to Rule them All.
July 1, 2017: Battle of the West Camp
June 25, 2713: Aaron appears in the Cosmodrome.
July 1, 2713: SIVA defeated.