The millennium celebrations were a worldwide, coordinated series of events to celebrate and commemorate the end of 1999 and the start of 2000 as well as the end of 2000 and the start of 2001 in the Gregorian calendar. The celebrations were held as marking the end of the 2nd millennium, the 20th century, and the 200th decade, and the start of the 3rd millennium, the 21st century, and the 201st decade (although the start and end points of such periods had been disputed). Countries around the globe held official festivities in the weeks and months leading up to the date, such as those organised in the United States by the White House Millennium Council, and most major cities produced firework displays at midnight. Equally, many private venues, cultural and religious centres held events. and a diverse range of memorabilia was created, including souvenir postage stamps.
As with every New Year's Eve, many events were timed with the stroke of midnight in the time zone of the location. There were also many events associated with the dawn on 1 January. An international television broadcast called 2000 Today was produced by a consortium of 60 broadcasters, while an alternative program Millennium Live was cancelled two days before the event.
