World’s only? This was commonplace in Germany maybe 10 years* ago. All (or at least both I knew which were decently large ones: Postbank and NordOstee Sparkasse) Banking websites would shut down every night and usually on Sunday as well. This was very annoying for the night-owl I was back then.
* My perception of time is notoriously bad, but I know for sure it was later than 2005
* My perception of time is notoriously bad, but I know for sure it was later than 2005