xkcd’s archive page doesn’t include dates. According to Archive.org, the current comic as of 05:58:11AM (whatever time zone) on 05 August 2007 (a Sunday) was Tesla Coil, so I’m guessing you were talking about the previous one, Lisp Cycles.
xkcd’s archive page doesn’t include dates. According to Archive.org, the current comic as of 05:58:11AM (whatever time zone) on 05 August 2007 (a Sunday) was Tesla Coil, so I’m guessing you were talking about the previous one, Lisp Cycles.