Well, the Hijri date 17 Dhul Qidah 1437 corresponds to the Gregorian date Saturday, 20 August 2016. This date lies in the eleventh month of the Hijri year 1437 AH, which is Dhu Al-Qidah of 1437 AH. Both this Hijri and Gregorian date occur on the single day that is Saturday without any doubt. The Arabic date 1437/11/17 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 20 August 2016 to its equivalent Arabic date.
The following is the conversion of the Arabic date 17 Dhul Qidah 1437 AH to its equivalent Gregorian date.
إِذْ جَآءَتْهُمُ ٱلرُّسُلُ مِنۢ بَيْنِ أَيْدِيهِمْ وَمِنْ خَلْفِهِمْ أَلَّا تَعْبُدُوٓا۟ إِلَّا ٱللَّهَ ۖ قَالُوا۟ لَوْ شَآءَ رَبُّنَا لَأَنزَلَ مَلَٰٓئِكَةًۭ فَإِنَّا بِمَآ أُرْسِلْتُم بِهِۦ كَٰفِرُونَ
When their messengers came unto them from before them and behind them, saying: Worship none but Allah! they said: If our Lord had willed, He surely would have sent down angels (unto us), so lo! we are disbelievers in that wherewith ye have been sent.
Surah Fussilat(41:14)
Sahih al-Bukhari
Retiring to a Mosque for Remembrance of Allah (I'tikaf)
Chapter: Vow in the pre-Islamic period to perform I'tikaf
Narrated Ibn `Umar:
that `Umar had vowed in the Pre-Islamic period to perform I`tikaf in Al-Masjid-al-Haram. (A subnarrator thinks that `Umar vowed to perform I`tikaf for one night.) Allah's Messenger (ﷺ) said to `Umar, "Fulfill your vow."
Sahih al-Bukhari 2043