First Millennium is 1-1000
1st Century  1-100 ,   2nd Century 101-200
3rd Century 201-300,  4th Century 301-400
5th Century 401-500 ,6th Century 501-600
7th Century 601-700, 8th Century 701-800
9th Century 801-900, 10th Century 901-1000

The Second Millennium is 1001-2000
11th Century 1001-1100, 12th Century 1101-1200
13th Century 1201-1300, 14th Century 1301-1400
15th Century 1401-1500, 16th Century 1501-1600
17th Century 1601-1700, 18th Century 1701-1800
19th Century 1801-1900

20th Century 1901-2000
The Third Millennium is 2001-3000
21st Century 2001-2100

You see, there is no such thing as the  year 0 or 0 Millennium because in this reality, there is no such thing as zero time , so the year of Christ's birth was the first year of the first Cenury. Hey I didn't make up the Calendar, the Catholic Church  Pope did....(When I find out the name of this Pope I'll post it) Anyway those  of you people who think the world's gonna end in the 21st Century, don't be so surprised that it doesn't end in 2000.... See now you've learned something new...
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