The world, centered on Kiritimati
Same coastlines, same borders, same everything — just rotated so the world's most obscure inhabited island sits in the middle.
Kiritimati (Christmas Island), Kiribati — population around 7,400, largest coral atoll on Earth by land area, and almost nobody outside the Pacific has heard of it. In 1995, Kiribati redrew the International Date Line so this entire country would share one date instead of being split across two — making Kiritimati the first inhabited place on the planet to greet each new day.