Well, the Hijri date 17 Rajab 1378 corresponds to the Gregorian date Monday, 26 January 1959. This date lies in the seventh month of the Hijri year 1378 AH, which is Rajab of 1378 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1378/07/17 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 26 January 1959 to its equivalent Arabic date.
The following is the conversion of the Arabic date 17 Rajab 1378 AH to its equivalent Gregorian date.
وَهَٰذَا كِتَٰبٌ أَنزَلْنَٰهُ مُبَارَكٌۭ فَٱتَّبِعُوهُ وَٱتَّقُوا۟ لَعَلَّكُمْ تُرْحَمُونَ
And this is a blessed Scripture which We have revealed. So follow it and ward off (evil), that ye may find mercy.
Surah Al-An'aam(6:155)
Sahih al-Bukhari
Prayers (Salat)
Chapter: If someone does not prostrate properly
Narrated Hudhaifa that he saw a person bowing and prostrating imperfectly. When he finished his Salat, Hudhaifa told him that he had not offered Salat. The subnarrator added, "I think that Hudhaifa also said:
Were you to die you would die on a "Sunna" (legal way) other than that of Muhammad (ﷺ)."
Sahih al-Bukhari 389