World celebrated the new millennium at exactly 12:00 a.m. on January 1, 2000. As the clock struck midnight, cities lit up with fireworks, crowds counted down the final seconds of 1999, and cheers erupted to welcome the year 2000 — marking what people saw as the start of a fresh century and a brand-new millennium. It was a moment of global excitement, televised countdowns, and historic celebrations, even though the technical new millennium would arrive a year later. Follow us @unknownthingshere f