Well, the Hijri date 20 Rajab 1401 corresponds to the Gregorian date Sunday, 24 May 1981. This date lies in the seventh month of the Hijri year 1401 AH, which is Rajab of 1401 AH. Both this Hijri and Gregorian date occur on the single day that is Sunday without any doubt. The Arabic date 1401/07/20 is calculated using the Umm Al-Qura calendar and the sighting of the moon. One thing to remember is that this Arabic date may occur on different Gregorian date depending upon the region and country and obviously the moon.
If you are still not sure about the date then you can use our Arabic date converter.
The following is the conversion of the Gregorian date 24 May 1981 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Rajab 1401 AH to its equivalent Gregorian date.
بِئْسَمَا ٱشْتَرَوْا۟ بِهِۦٓ أَنفُسَهُمْ أَن يَكْفُرُوا۟ بِمَآ أَنزَلَ ٱللَّهُ بَغْيًا أَن يُنَزِّلَ ٱللَّهُ مِن فَضْلِهِۦ عَلَىٰ مَن يَشَآءُ مِنْ عِبَادِهِۦ ۖ فَبَآءُو بِغَضَبٍ عَلَىٰ غَضَبٍۢ ۚ وَلِلْكَٰفِرِينَ عَذَابٌۭ مُّهِينٌۭ
Evil is that for which they sell their souls: that they should disbelieve in that which Allah hath revealed, grudging that Allah should reveal of His bounty unto whom He will of His slaves. They have incurred anger upon anger. For disbelievers is a shameful doom.
Surah Al-Baqara(2:90)
Sahih al-Bukhari
Invocations
Chapter: What to say when one gets up in the morning
Narrated Shaddad bin 'Aus:
The Prophet (ﷺ) said, "The most superior way of asking for forgiveness from Allah is: 'Allahumma anta Rabbi la ilaha illa anta. Khalaqtani wa ana `Abduka, wa ana 'ala 'ahdika wa Wa'dika mastata'tu abu'u Laka bi ni 'matika wa abu'u Laka bidhanbi; faghfirli fa'innahu la yaghfiru-dh-dhunuba ill a ant a. A'uidhu bika min sharri ma sana'tu.' If somebody recites this invocation during the night, and if he should die then, he will go to Paradise (or he will be from the people of Paradise). And if he recites it in the morning, and if he should die on the same day, he will have the same fate."
Sahih al-Bukhari 6323