2000

According to the Gregorian calendar, these distinctions fall to the year 2001, because the 1st century was retroactively said to start with the year AD 1.

The year 2000 is sometimes abbreviated as "Y2K" (the "Y" stands for "year", and the "K" stands for "kilo" which means "thousand").

[4][5] The year 2000 was the subject of Y2K concerns, which were fears that computers would not shift from 1999 to 2000 correctly.

However, by the end of 1999, many companies had already converted to new, or upgraded existing, software.

As a result of massive effort, relatively few problems occurred.

From top to bottom, left to right: Kenya Airways Flight 431 before it crashed off the Ivory Coast; an Air France Concorde similar to the one that crashed after takeoff from Charles de Gaulle Airport in Paris ; a monumemt commemorating the Kursk submarine disaster ; the aftermath of the USS Cole bombing ; a Russian BTR-80 destroyed by Chechen fighters during the Second Chechen War ; heads of state meet for the Millennium Summit ; people of the world, as seen here in Times Square , celebrate the New Millennium ; the International Space Station in its infant form as seen from STS-97; the PlayStation 2 releases, later becoming the best-selling video game console of all time ; supporters of Al Gore protesting for a recount of the 2000 United States presidential election ; the 2000 Summer Olympics are held in Sydney, Australia; Israeli troops repsond to the Second Intifada ; a United States Air Force MH-53 flies over the Mozambique flood which killed 700–800 people; the Yugoslavian House of the Federal Assembly on fire during the overthrow of Slobodan Milošević ; a rendering of the Nasdaq Composite Index showing the dot-com bubble ; a memorial for the Kaprun disaster .