Well, the Hijri date 14 Dhul Qidah 1400 corresponds to the Gregorian date Tuesday, 23 September 1980. This date lies in the eleventh month of the Hijri year 1400 AH, which is Dhu Al-Qidah of 1400 AH. Both this Hijri and Gregorian date occur on the single day that is Tuesday without any doubt. The Arabic date 1400/11/14 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 23 September 1980 to its equivalent Arabic date.
The following is the conversion of the Arabic date 14 Dhul Qidah 1400 AH to its equivalent Gregorian date.
يُولِجُ ٱلَّيْلَ فِى ٱلنَّهَارِ وَيُولِجُ ٱلنَّهَارَ فِى ٱلَّيْلِ ۚ وَهُوَ عَلِيمٌۢ بِذَاتِ ٱلصُّدُورِ
He causeth the night to pass into the day, and He causeth the day to pass into the night, and He is knower of all that is in the breasts.
Surah Al-Hadid(57:6)
Sahih al-Bukhari
Retiring to a Mosque for Remembrance of Allah (I'tikaf)
Chapter: Women's I'tikaf.
Narrated `Amra:
Aisha said, "the Prophet (ﷺ) used to practice I`tikaf in the last ten days of Ramadan and I used to pitch a tent for him, and after offering the morning prayer, he used to enter the tent." Hafsa asked the permission of `Aisha to pitch a tent for her and she allowed her and she pitched her tent. When Zainab bint Jahsh saw it, she pitched another tent. In the morning the Prophet (ﷺ) noticed the tents. He said, 'What is this?" He was told of the whole situation. Then the Prophet (ﷺ) said, "Do you think that they intended to do righteousness by doing this?" He therefore abandoned the I`tikaf in that month and practiced I`tikaf for ten days in the month of Shawwal."
Sahih al-Bukhari 2033