AD 2000

Millennium:	2nd millennium
Centuries:	19th century 20th century 21st century
Decades:	1980s 1990s 2000s 2010s 2020s
Years:	1997 1998 1999 2000 2001 2002 2003

2000 in various calendars

Gregorian calendar	2000 MM
Ab urbe condita	2753
Armenian calendar	1449 ԹՎ ՌՆԽԹ
Assyrian calendar	6750
Bahá'í calendar	156–157
Balinese saka calendar	1921–1922
Bengali calendar	1407
Berber calendar	2950
British Regnal year	48 Eliz. 2 – 49 Eliz. 2
Buddhist calendar	2544
Burmese calendar	1362
Byzantine calendar	7508–7509
Chinese calendar	己卯年 (Earth Rabbit) 4696 or 4636     — to — 庚辰年 (Metal Dragon) 4697 or 4637
Coptic calendar	1716–1717
Discordian calendar	3166
Ethiopian calendar	1992–1993
Hebrew calendar	5760–5761
Hindu calendars
- Vikram Samvat	2056–2057
- Shaka Samvat	1921–1922
- Kali Yuga	5100–5101
Holocene calendar	12000
Igbo calendar	1000–1001
Iranian calendar	1378–1379
Islamic calendar	1420–1421
Japanese calendar	Heisei 12 (平成１２年)
Javanese calendar	1932–1933
Juche calendar	89
Julian calendar	Gregorian minus 13 days
Korean calendar	4333
Minguo calendar	ROC 89 民國89年
Nanakshahi calendar	532
Thai solar calendar	2543
Tibetan calendar	阴土兔年 (female Earth-Rabbit) 2126 or 1745 or 973     — to — 阳金龙年 (male Iron-Dragon) 2127 or 1746 or 974
Unix time	946684800 – 978307199
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2000 (MM) was a century leap year starting on Saturday 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 was designated as:

Popular culture holds the year 2000 as the first year of the 21st century and the 3rd millennium due to a tendency of grouping the years according to decimal values, as if year zero were counted. According to the Gregorian Calendar, these distinctions fall to the year 2001, because the 1st century was retroactively said to start with year AD 1. Since the calendar does not have year zero, its first millennium spanned from years 1 to 1000 inclusively and its second millennium from years 1001 to 2000 (See more at Century and Millennium). However the century and millennium that began in 2000 are known as the 2000s.

The year 2000 is sometimes abbreviated as "Y2K" (the "Y" stands for "year", and the "K" stands for "kilo" which means "thousand"). The year 2000 was the subject of Y2K concerns, which are 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. Some even obtained Y2K certification. As a result of massive effort, relatively few problems occurred.

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Wikipedia