Well, the Hijri date 18 Ramadan 1378 corresponds to the Gregorian date Friday, 27 March 1959. This date lies in the ninth month of the Hijri year 1378 AH, which is Ramadan of 1378 AH. Both this Hijri and Gregorian date occur on the single day that is Friday without any doubt. The Arabic date 1378/09/18 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 27 March 1959 to its equivalent Arabic date.
The following is the conversion of the Arabic date 18 Ramadan 1378 AH to its equivalent Gregorian date.
فَإِذَا قَضَيْتُمُ ٱلصَّلَوٰةَ فَٱذْكُرُوا۟ ٱللَّهَ قِيَٰمًۭا وَقُعُودًۭا وَعَلَىٰ جُنُوبِكُمْ ۚ فَإِذَا ٱطْمَأْنَنتُمْ فَأَقِيمُوا۟ ٱلصَّلَوٰةَ ۚ إِنَّ ٱلصَّلَوٰةَ كَانَتْ عَلَى ٱلْمُؤْمِنِينَ كِتَٰبًۭا مَّوْقُوتًۭا
When ye have performed the act of worship, remember Allah, standing, sitting and reclining. And when ye are in safety, observe proper worship. Worship at fixed times hath been enjoined on the believers.
Surah An-Nisaa(4:103)
Sahih al-Bukhari
Fighting for the Cause of Allah (Jihaad)
Chapter: Hastening in travel
Narrated Aslam:
While I was in the company of `Abdullah bin `Umar on the way to Mecca, he received the news of the severe illness of Safiya bint Abi Ubaid (i.e. his wife), so he proceeded at greater speed, and when the twilight disappeared, he dismounted and offered the Maghrib and `Isha 'prayers together and said, " I saw the Prophet (ﷺ) delaying the Maghrib prayer to offer it along with the `Isha' when he was in a hurry on a journey."
Sahih al-Bukhari 3000