Well, the Hijri date 21 Rabi Al Thani 1364 corresponds to the Gregorian date Wednesday, 4 April 1945. This date lies in the fourth month of the Hijri year 1364 AH, which is Rabi Al-Thani of 1364 AH. Both this Hijri and Gregorian date occur on the single day that is Wednesday without any doubt. The Arabic date 1364/04/21 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 4 April 1945 to its equivalent Arabic date.
The following is the conversion of the Arabic date 21 Rabi Al Thani 1364 AH to its equivalent Gregorian date.
وَلَا تَلْبِسُوا۟ ٱلْحَقَّ بِٱلْبَٰطِلِ وَتَكْتُمُوا۟ ٱلْحَقَّ وَأَنتُمْ تَعْلَمُونَ
Confound not truth with falsehood, nor knowingly conceal the truth.
Surah Al-Baqara(2:42)
Sahih al-Bukhari
Prayer at Night (Tahajjud)
Chapter: How was the Salat of the Prophet (pbuh) and how many Rak'a he used to offer at night?
Narrated Ibn `Abbas:
The prayer of the Prophet (ﷺ) used to be of thirteen rak`at, i.e. of the night prayer.
Sahih al-Bukhari 1138