Well, the Hijri date 20 Rabi Al Thani 1355 corresponds to the Gregorian date Thursday, 9 July 1936. This date lies in the fourth month of the Hijri year 1355 AH, which is Rabi Al-Thani of 1355 AH. Both this Hijri and Gregorian date occur on the single day that is Thursday without any doubt. The Arabic date 1355/04/20 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 9 July 1936 to its equivalent Arabic date.
The following is the conversion of the Arabic date 20 Rabi Al Thani 1355 AH to its equivalent Gregorian date.
تُدَمِّرُ كُلَّ شَىْءٍۭ بِأَمْرِ رَبِّهَا فَأَصْبَحُوا۟ لَا يُرَىٰٓ إِلَّا مَسَٰكِنُهُمْ ۚ كَذَٰلِكَ نَجْزِى ٱلْقَوْمَ ٱلْمُجْرِمِينَ
Destroying all things by commandment of its Lord. And morning found them so that naught could be seen save their dwellings. Thus do We reward the guilty folk.
Surah Al-Ahqaf(46:25)
Sahih al-Bukhari
Funerals (Al-Janaa'iz)
Chapter: The placing of Idhkhir and grass in the grave
Narrated Ibn `Abbas:
The Prophet (ﷺ) said, "Allah has made Mecca a sanctuary (sacred place) and it was a sanctuary before me and will be so after me. It was made legal for me (to fight in it) for a few hours of the day. None is allowed to uproot its thorny shrubs or to cut its trees or to chase its game or to pick up its fallen things except by a person who announces it publicly." On that Al-Abbas said (to the Prophet), "Except Al- Idhkhir for our goldsmiths and for our graves." And so the Prophet (ﷺ) added, "Except Al-Idhkhir. " And Abu Huraira narrated that the Prophet (ﷺ) said, "Except Al-Idhkhir for our graves and houses." And Ibn `Abbas said, "For their goldsmiths and houses."
Sahih al-Bukhari 1349