Well, the Hijri date 25 Jumada Al Oula 1406 corresponds to the Gregorian date Tuesday, 4 February 1986. This date lies in the fifth month of the Hijri year 1406 AH, which is Jumada Al-Awwal of 1406 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1406/05/25 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 February 1986 to its equivalent Arabic date.
The following is the conversion of the Arabic date 25 Jumada Al Oula 1406 AH to its equivalent Gregorian date.
إِنَّ ٱلَّذِينَ ءَامَنُوا۟ ثُمَّ كَفَرُوا۟ ثُمَّ ءَامَنُوا۟ ثُمَّ كَفَرُوا۟ ثُمَّ ٱزْدَادُوا۟ كُفْرًۭا لَّمْ يَكُنِ ٱللَّهُ لِيَغْفِرَ لَهُمْ وَلَا لِيَهْدِيَهُمْ سَبِيلًۢا
Lo! those who believe, then disbelieve and then (again) believe, then disbelieve, and then increase in disbelief, Allah will never pardon them, nor will He guide them unto a way.
Surah An-Nisaa(4:137)
Sahih al-Bukhari
Oaths and Vows
Chapter: If somebody vowed during the Pre-Islamic Period of Ignorance, and then he embraces Islam
Narrated Ibn `Umar:
`Umar said "O Allah's Messenger (ﷺ)! I vowed to perform I`tikaf for one night in Al-Masjid-al-Haram, during the Pre-Islamic Period of ignorance (before embracing Islam). "The Prophet (ﷺ) said, "Fulfill your vow." Ibn `Umar said to the lady, "Pray on her behalf." Ibn `Abbas said the same.
Sahih al-Bukhari 6697