Islamic concepts

Yawm يوم — day; time period, stage, event, moment

In the Qurʾān, Yawm roughly means ‘day’, but not all of these ‘days’ are 24 hours long:

  • And they urge you to hasten the punishment. But Allah will never fail in His promise. And indeed, a day with your Lord is like 1000 years of those which you count. 22:47
  • He arranges [each] matter from the heaven to the earth; then it will ascend to Him in a Day, the extent of which is 1000 years of those which you count. 32:5
  • “The angels and the Spirit will ascend to Him during a Day the extent of which is 50,000 years.” 70:4

http://yahyasnow.wordpress.com/2009/09/01/alleged-contradiction-against-the-quran-is-wrong-how-long-is-a-day-1000-or-50000-years/