Names Of Months And The Lunar Calendar
https://youtu.be/LbpWPamtXGA Watch from 1:02:15
We also know from documentation that the battle of yarmouk occured in august which Muslims recorded as rajab: So what we know is that in 636 August was in the Islamic month of Rajab. This would mean that a 7 year difference would result in a 77 day difference. So in 643, Rajab would be May 30th if August 15th is used as a baseline and 4th June if August 20th is used. If April is Jamadi Ul Awwal, then May would be Jamadi Ut Thani and then June would be Rajab. So the date on the papyrus is accurate and in line with the Hijri calendar. So that inscription does not really support the view because if April is Jamadi Ul Awwal then it shows an 11 day shift All this would show is by 643 it was a lunar calendar but it was brought in during Umar’s reign And the Byzantine record seem to show rajab corresponds to August If I’m going based on what it literally says then the date of April 28th in the document corresponds to Jamadi Uthhani making rajab in May, Shaban in June, Ramadan in July But this itself cannot be correct either Because in 636 Ramadan was in October and there’s not a 77 day difference between July and October I would feel that perhaps the month on the papyrus is incorrect because it clashes with the Byzantine record even if we use an 11 day difference Yes I believe it was changed. In 636 Ramadan was in October and there’s good evidence for this but by 643 they were not. So the change happened between that time. Or perhaps it was going on in 636 but the difference was only 11 days so by 636 Ramadan was still in October It’s inconceivable that Ramadan fell in October twice because it would only happen every 33 years or so in a lunar cycle. Courtesy of @Subn2
I agree that the order of the months would be known. I would love comments form Hassan sahab that could elucidate on if the method of the purely lunar calendar we have today has ijma and tawatur. Tawatur being especially important. We can use certain dates like yarmouk etc and we can establish there was a purely lunar calendar at the time of Omar رضي الله عنه . Now was this established also at the time of the prophet صلى الله عليه وسلم ? That is the question. And if Umar رضي الله عنه move the dates back by 2 months and 8 days then that would also be an issue. So some comments by Hassan sahab would be very appreciated جزاكم الله خيرا
Response by Hassan Ilyas Sahab : https://soundcloud.com/ask-ghamidi/0072-does-fasting-in-ramzan-have-to-do-with-it-being-a-harvest-month/s-a15cqEPHDyg