Battle of Tashiskari happened in 1609.
Battle of DimDim happened in 1609-11.
The Starving Time
War of the Jülich succession happened in 1609.
Basque witch trials happened in 1609.
Siege of Troitse-Sergiyeva Lavra happened in 1609.
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The Starving Time in Jamestown was a period of starvation in the Jamestown colony. It occurred from 1609 to 1610.
The number 1609 can be a noun, or an adjective enumerating another noun. The year 1609 AD is a noun.
Henry Hudson sailed into what is now New York Harbour in 1609.
It is: 1609-4.5 = 1604.5
Yes,the number 1609 is a prime number.