Well, the Hijri date 27 Dhul Qidah 1405 corresponds to the Gregorian date Tuesday, 13 August 1985. This date lies in the eleventh month of the Hijri year 1405 AH, which is Dhu Al-Qidah of 1405 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1405/11/27 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 13 August 1985 to its equivalent Arabic date.
The following is the conversion of the Arabic date 27 Dhul Qidah 1405 AH to its equivalent Gregorian date.
فَنَادَتْهُ ٱلْمَلَٰٓئِكَةُ وَهُوَ قَآئِمٌۭ يُصَلِّى فِى ٱلْمِحْرَابِ أَنَّ ٱللَّهَ يُبَشِّرُكَ بِيَحْيَىٰ مُصَدِّقًۢا بِكَلِمَةٍۢ مِّنَ ٱللَّهِ وَسَيِّدًۭا وَحَصُورًۭا وَنَبِيًّۭا مِّنَ ٱلصَّٰلِحِينَ
And the angels called to him as he stood praying in the sanctuary: Allah giveth thee glad tidings of (a son whose name is) John, (who cometh) to confirm a word from Allah lordly, chaste, a prophet of the righteous.
Surah Aal-i-Imraan(3:39)
Sahih al-Bukhari
Call to Prayers (Adhaan)
Chapter: Saying of Amin aloud by the Imam
Narrated Abu Huraira:
The Prophet (ﷺ) said, "Say Amin" when the Imam says it and if the Amin of any one of you coincides with that of the angels then all his past sins will be forgiven." Ibn Shihab said, "Allah's Messenger (ﷺ) used to Say "Amin."
Sahih al-Bukhari 780