Photos show how we prepared. It's the 25th anniversary of Y2K, when panic about a millennium bug swept the nation. Hotspots ranked Start the day smarter ☀️ Funniest cap messages Get the USA ...

Stock traders, wearing Y2K glass, celebrate at the last trading day 1999, where closed up with the historic record of 17,091 points, in the floor of Sao Paulo's Stock Exchange, December 30.

By the time Y2K struck the Arch on January 1, 2000, the new millennium party was at full blast. Along Washington Avenue’s club row, decked-out young people kissed everyone nearby.