2000 ( MM ) was a century leap year starting on Saturday ( link will display the full calendar ) of the Gregorian calendar , the 2000th year of the Common Era ( CE ) and Anno Domini ( AD ) designations , the 1000th and last year of the 2nd millennium , the 100th and last year of the 20th century , and the 1st year of the 2000s decade .
2000 ( MM ) was a leap year that started on a Saturday in the Christian or Common Era , according to the Gregorian calendar .