There is a special hour on Friday, during which all prayers are accepted and answered by Allah, all praises and glory be to Him. This is part of the blessings that Allah bestowed on this day, over all the other days of the week.
Abu Hurayrah narrated that the Prophet, peace be upon him, said:
“On Friday, there is an hour during which, if any Muslim is standing in front of Allah in salat, and asking Allah for something good, he will be granted his request.”
Then he made a sign with his hands, showing that it a very short period of time. (Recorded in al-Bukhari)
There are numerous opinions as to the exact hour of Friday during which this occurs, but two opinions are the strongest: when the Imam sits down between the two khutbahs until the end of the khutbah, and after the ‘Asr prayer until the maghrib prayer.
Ibn al-Qayyim, may Allah have mercy on him, preferred the second opinion over the first, because of the following hadith:
“Friday has twelve hours (or parts to it). There is one hour during which if a Muslim asks Allah anything, Allah will give it to him, so find it during the last hour after ‘Asr.” (Recorded in Abu Dawud)
This is also the opinion of the vast majority of early scholars and the Prophet’s companions, peace be on them all, that this hour occurs after ‘Asr, and right before sunset. And Allah knows best.