The Day of Arafat is the second day of the Hajj pilgrimage, which is an annual Islamic pilgrimage to Mecca, Saudi Arabia. The day falls on the 9th day of the Islamic lunar month of Dhu al-Hijjah.

On this day, millions of Muslims gather at the Plain of Arafat, a vast desert plain outside of Mecca, to perform one of the most important rituals of the Hajj pilgrimage - to stand in the presence of Allah (SWT), seeking forgiveness and mercy. According to Islamic belief, this is the day when Allah (SWT) forgives the sins of those who sincerely repent and seek forgiveness.

The Day of Arafat is considered to be one of the most significant days in the Islamic calendar, and it is a time for Muslims to reflect, seek forgiveness, and make supplications to Allah (SWT). For those who are not performing the Hajj pilgrimage, it is recommended to fast on this day, as it is believed to expiate sins of the previous year and the coming year.