If this is comedy, sign me up for tragedy.

This feels like something that must be the root of innumerable small and easily overlooked bugs out there.

It's a common source of off-by-one date formatting bugs in client-rendered web apps, particularly ones that pass around "YYYY-MM-DD" date strings (common for OpenAPI JSON APIs).

  const dateStringFromApiResponse = "2026-01-12";
  const date = new Date(dateStringFromApiResponse);
  const formatter = new Intl.DateTimeFormat('en-US', { dateStyle: 'long' });
  formatter.format(new Date("2026-01-12"));

  // 'January 11, 2026'