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xkcd #2849: Under the Stars
(imgs.xkcd.com)
Alt text:
If you live in Los Angeles (around 33°52'N, roughly the latitude of Hermosa Beach) the black hole in V404 Cygni passes over you each day. On Christmas Day it will be directly overhead around 2pm.
I'm sure I read it online it might have just been a scifi writing prompt from the site that must not be named (reddit).