there is absolutely no way of knowing the exact day...
they start to feel ill
There was the spread of a plague but the exact nature of the plague is unknown. It is widely believed to be a strain of Bubonic Plague.
0:00....aka....midnight exact
Twelve am, although I learned the hard way that is not time to start opening your presents.
Where we live, today (August 4, 2016) was the first day of school. In other regions it may not start until after Labor Day. Not all school districts start on the exact same day.
The Plague started in 1340 in England on ships. Too many germs.
St. Giles in the Fields had the first reported case of plague.
It depends on which plague.
in Mongolia
there really isn't a set date
there is no exact day
Sometime in august 2012. I don't know the exact day.