On the Day when the heaven will shake with a dreadful shaking

﴿يَوۡمَ تَمُورُ ٱلسَّمَآءُ مَوۡرٗا ﴾
[الطُّور: 9]

﴿يوم تمور السماء مورا﴾ [الطُّور: 9]

Al Bilal Muhammad Et Al
On the day that the firmament will be in dreadful commotion

Ali Bakhtiari Nejad
A day when the sky swings back and forth

Ali Quli Qarai
On the day when the sky whirls violently

Ali Unal
On that Day the heaven will be convulsed violently

Hamid S Aziz
On the day when the heaven shall heave with awful commotion

John Medows Rodwell
Reeling on that day the Heaven shall reel

Literal
A day/time the sky/space agitates/moves from side to side quickly (in) agitation/quick movement from side to side

Mir Anees Original
The day the sky will whirl (with a) whirl

Mir Aneesuddin
The day the sky will whirl (with a) whirl

On the Day when the heaven will shake with a dreadful shaking 52:9 English translation