Is there a sign of the Night of Power (Laylatul-Qadr)? Does it change according to the first day of Ramadan?

Are the explanations stating that if Ramadan starts on a certain day of the week, the night of power is on a certain night of Ramadan? Are there any signs indicating that a certain night is the night of power?
Is the information shared in social media true? Is it necessary to act in accordance with that information? Is it useful or harmful to act in accordance with that information?
The information shared in social media is as follows:
“Imam Sharani mentions his own discovery and states the following: If Ramadan, (Laylatul-Qadr) starts on Monday, the Night of Power is the 29^th night. If it starts on Tuesday, it is on the 27^th night, if it starts on Thursday, it is on the 25^th night, if it starts on Saturday, it is on the 23^rd night, if it starts on Monday, it is on the  21^st night if it starts on Wednesday, it is on the 19^th night and if it starts on Friday, it is on the 17^th night.” (Mishkatul-Anwar, Shir’atul-Islam)
Abul Hasan Harqani, who says, “I have never missed any Night of Power since my puberty”, states the following: When Ramadan started on Sunday, the Night of Power was on the 29^th night. When it started on Monday, it was on the 21^st night. When it started on Tuesday, it was on the 27^th night; when it started on Wednesday, it was on the 19^th night; when it started on Thursday, it was on the 25^th night; when it started on Friday, it was on the 17^th night; when it started on Saturday, it was on the 23^rd night.”
“The signs of the Night of Power:  Scholars give the following description to understand the Night of Power: The weather is clear and calm on the Night of Power; it is neither hot nor cold. The next morning, the sun is red and rises without rays. Some scholars say dogs do not howl on the Night of Power. Ubayd bin Umar narrates: I was in the sea on the Night of Power and drank sea water; it was not salty; it was soft and nice.”

Dear Brother / Sister,

We will try to answer the questions in items:

1. The determinations of Imam Sharani based on that mathematical calculation are among the things that we have heard for a long time.

If those narrations are true, it means Imam Sharani mentions his own experiences. 

2. Such personal experiences are not enough to direct the ummah because the Night of Power is idiosyncratic and a reality covered by the curtain of ghayb (the unknown/unseen). It is contrary to its characteristic to be in a clear formula that everybody can know.

3. There are some signs that scholars mention for the Night of Power: The weather is mild, clear and calm on that night. The sun rises without rays in the morning, etc.  

They are generally pieces of information based on personal experience. The existence of some of those signs might be enough. 

4. Religious decrees cannot be based on stories. There are definitely many stories about the Night of Power, which has a past of 15 centuries. We do not deny those who utter the statements above but we cannot accept them as definite decrees of the religion; we cannot say that they are unerring.  

5. Besides, it is said that an important part of those signs occurs at night and in the morning. Thus, it does not seem possible to determine the Night of Power beforehand based on them and worship the whole night because the night has already ended.    

6. It is indicated in various hadith narrations that it is in the second half of the month of Ramadan and especially on the odd nights of the last ten days. (Muslim, Siyam, 205-207)

7. However, there are also narrations that it is on the 27^th of Ramadan, when the ummah worships traditionally.   

Ubayy b. Kab narrates: “By Allah, I know the Night of Power. My knowledge is that it is on the 27th of Ramadan, when the Prophet (pbuh) ordered us to worship. Its sign is that the sun rises without emitting white rays in the morning.” (Muslim, Salatul-Musafirin, 179)

Abu Hurayra narrates: “We were discussing about the Night of Power in the presence of the Prophet (pbuh). He said, ‘Do you remember the moon being like the half of a tray?’ That shape of the moon is present on the 27^th night.” (Muslim, Siyam, 222)

8. Some determinations based on divine coincidences indicate that the Night of Power is on the 27^th night:

- The number of the words in the chapter of al-Qadr is 30, as many as the days of the month of Ramadan. The word “hiya= it” mentioned in the last verse and referring to the Night of Power is the 27^th word, which is an indication that the Night of Power is on the 27^th night.

- The phrase “Laylatul-Qadr” meaning the Night of Power is mentioned three times in the chapter. The number of the letters of the phrase (in Arabic) is 9. 9x3= 27.

To sum up, it will be useful to underline a reality that Hafiz Shirazi expresses in a poem in Persian:

“O Preacher!
Why have you been listing the signs of the Night of Power for hours?
If you appreciate it, every night is the Night of Power.”

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