Prophesier

Only a few people know accurately
when they would die, 
How they would die, 
The year, month, day
Time, place accurately. 

Wonder not, they are not
Great scholars of biology;
They're not preachers who're
blessed with forevision gift;
They're not well known seers or infallible  astronomers! 
​
They are but prison inmates
Convicted to be hanged.
Who else on earth can know
Better than them to see 
The death approaching silently,
So accurately as preset?