Shaykh Yasir Qadhi explains explicitly about the Day of Judgment in light of Surat Ad-Dukhan and Surat Al-Jathiyah.
Belief in Yawm al Qiyamah is the most talked about in the Qur'an after Tawheed. 40 names are mentioned in the Qur'an for Yawm Al Qiyamah. There are scientific, ethical, philosophical biological and rational concepts of the Day of Judgement.
Of a few descriptions of Yawm al Qiyamah is that people’s hearts will be in their throats meaning that they will be terrified beyond measure. young men will turn into old men.People will be assumed to be in a drunken state but they will not be actually drunken rather they are in a state of daze. On that day, the righteous will be saved and will pass through this day in a duration which is that between Asr and Maghrib. But those who had rejected Islam will have the day equal to 50000 years.