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How long did William Hartnell play Doctor Who?
Five Years 1963-1966 he left due to ill health
What does the fourth millennium BC or BCE mean in terms of beginning and end dates?
A millenium is 1000 years long from beginning to end. In terms of the modern calendar, there is no year-long period called year zero, no century zero and no millenium zero. As it is on the standard number line, 'zero' is a point in time on the calendar.So, the year 1 BCE (Before Common Era, or BC for Before Christ) ended on December 31 1 BCE, the day before January 1, 1 AD. That first year started on the previous January 1, 1 BCE.The first century BCE is the entire 100 years ending December 31 1 BCE, and starting January 1 100 BCE.The first millenium BCE then started January 1 1000 BCE and ended December 31 1 BCE.The fourth millenium BCE started January 1 4000 BCE and ended December 31 3001 BCE.It is a little odd. The numbers of the years centuries and millenia go in reverse order, like the number line. But the dates within a given year go forward as usual.
How long is a centry?
A century is 100 years long.
How long did the witch hunt lasted?
a long time
What year will this century end?
This century, the twenty first of the common era, will end at midnight, December 31, 2100. There is a constant disagreement about this; many will insist that the next century will begin on Jan 1 2100. But centuries contain one hundred full years, and there was no year long period called year 0. The next century begins January 1 of 2101.
