Peace...
Hi everyone..
first of all, I have no intention of spoiling this topic, but hopefully, it has a connection to what I refer.. having said that, let me bring my explanation.
Through the time of my investigation of the Quran, I realized that the word 'Yaum' means Daytime but actions filled with, meanwhile the word 'Nahar' means the points of daytime, i.e. Dawn to Dusk and to be precise from first clear to end of its light.. The word Nahar is not used in the Quran to refer to actions/activities of daytime in a literal sense though that's what happens normally. Wherever Allah used the word 'Yaum' is concerned with direct, indirect, or metaphorical actions during the daytime and NOT night.. Yaum or Nahar is never part of Night/Lail.. In Allah's Law Yaum is never part of both Daytime and Night to constitute 'ONE DAY' as we do in modern days.. The one-day concept of midnight to midnight is irrelevant to Allah.. One day means from dawn to dusk and that's one day and Night is blotted out (17:12).. And that's 'Yaum' and even 'Nahar' but usage of Yaum for activities and Nahar is for indication of the span.. Lail/night is for night time of indication and activities..
69:7 "Which Allah imposed upon them for seven nights (lail) and eight days (Ayyam) in succession....."
The above verse is one of the rare occurrences in the entire Quran.. Allah always adjoins Lail and Nahar in many verses, but not Lail and Yaum. As I explained above, Yaum is for activities and, it is justified by placing the word Ayyam to refer to daytime and not the night in the above verse as night is already mentioned.. You can never say 8 days (24 hours) if they do not consist of 8 nights but not in Allah's law.. simply, a day is never night..
It clearly shows by the above verse, that the punishment, imposed began at the beginning of the Daytime and ended on the 8th daytime which included rightly 7 nights..
If the moon takes 29.5 then, it is indeed 30 Nahar/Days and 29 nights..
The moon is witnessed visibly and legibly to the naked eye at night. Subsequently seeing the Full Moon or traditionally new crescent moon, the day won't start from the night itself.. The day starts in the morning and the Moon just indicated it.. I have chosen the Full Moon to Full Moon with a logical reason, that is to say, The full moon is visible at the outset of the night and until the end of the night and that's unlikely with a new moon.. So, people can easily deduce the beginning of a new month with a new day by seeing the night sky at the outset or at the end of the night i.e. at dawn.
78:10- 11 "And made the night as covering, and made the day for means of living."
Nothing more one can deduce from this... Full daytime is one-day in God's law..
17:12 And We have made the night and day two signs, and We erased the sign of the night and made the sign of the day (Nahar) visible that you may seek bounty from your Lord and may know the number of years and the account
if anyone says, Night is part of One-day in the book of Allah, that's their assumption...