If you recall, last year a multitude of casinos also issued Millennium chips.
This year some of them [i.e. The Claridge]re issued, "REAL" Millennium chips.
Maybe next year they will issue almost millennium chips
The year after not really millennium chips ...but close and so on

The calendar started with the year [1] not [0] therefore it was New Year's eve 2000 until 00:00:01 When it became New Years Day....

Hand me a paddle .. I'll help you stir