That is the day when will happen the inevitable event.
That is the day when the inevitable event will come to pass.
on that Day, the Event occurs
On that day will the Event come to pass
So that day, the Resurrection/Event landed/happened
It will be the time for the inevitable to happen
So that is the day when the forthcoming event will occur
On that day will the Great Event come to pass
Then that will be the Hour when the surely Inevitable (calamity) will occur
Then, on that day the great and sure Reality shall come to be
Then on that Day shall the (Great) Event befall