Has the hadith, "By Him in Whose Hand is my soul, it will be lightened for the believer until it is lighter for him than an obligatory prayer," been declared weak by Al-Albani? And what is the summary concerning the length of the Day of Resurrection?

The Day of Resurrection will be fifty thousand years long for the disbelievers. As for the believers, there are narrations indicating that it will be lighter than a prescribed prayer, or equivalent to the time between Dhuhr and Asr, or equal to a day from the days of this world. The most authentic of these is what Al-Hakim and Al-Bayhaqi narrated from Abu Hurairah, may Allah be pleased with him, that the Prophet, peace and blessings be upon him, said: "The Day of Resurrection is like the time between Dhuhr and Asr."