Laylat al-Qadr (from Arabic: لیلة القدر), variously rendered in English as the Night of Decree, Night of Power, Night of Value, Night of Destiny, or Night of Measures, is, in Islamic belief, the night when the first verses of the Quran were revealed to the Islamic prophet Muhammad. It is one of the nights of the last ten days of Ramadan. Muslims believe that on this night the blessings and mercy of God are abundant, sins are forgiven, supplications are accepted, and that the annual decree is revealed to the angels who also descend to earth, especially the angel Gabriel, referred to as "the Spirit", to perform every and any errand decreed by God.
Laylatul Qadr is either the 21st or 23rd night of the Month of Ramadhan. It is not confined with specific weather. Whether differs from place to place in the same country while Laylatul Qadr is for all place of that part of the world.
Thank you for your question. On the night of Decree God decrees the affairs of His creation for the next year. As such a female's menstrual cycle does not prevent her from benefiting from the blessings of that night. There are some acts of worship she cannot do, like praying a obligatory prayer. But there are many more acts that she can do like supplicating, remembering Allah, reading Qur'an and so on.
May you always be successful
We are following the authentic narrations from the Prophet Muhammad (SAWA) in every religious matter including this matter. The authentic narrations mentioned three nights; 19th and 21st and 23rd.
The Night of Qadr according to most authentic Hadeeths is 19th or 21st or 23rd of the Month of Ramadan.
Most of our brothers and sisters who follow Sunni sects think that 27th is the most likely night of Qadr. This is because of the Sunni rulers who wanted to drive the Muslims away from the narrations and teachings of Ahlul Bayt (AS).
In fact, there are many authentic Hadeeths in Sunni books stating that the Night of Al-Qadr is 19th or 21st or 23rd. (Nayl Al-Awtaar by Al-Shawkani).
The narration of 27th is unauthentic narration which has been narrated by one person named Ubayy Bin Ka'b stating his own opinion and not narrated from the Prophet Muhammad (SAWA) but it was been publicized by the rulers against the authentic Hadeeths from Ahlul Bayt (AS).
Thank you for your question. The occurrence of Layaltul Qadr during the month of Ramadan is derived from the Qur'an itself. In surah al-Baqarah verse 185, God says:
"The month of Ramadan is that in which the Quran was revealed"
And the night in which the Qur'an was revealed was the Night of Decree as is stated in the first verse of surah al-Qadr:
"Surely We revealed it on the night of decree."
However, the Qur'an does not specify which night in the month of Ramadan lalat al-Qadr is and so the next step is to turn to the traditions on the subject.
While the last 10 nights have been generally specified for a person to seek the night of Qadr in the traditions in the books of the school of the Ahl al-Bayt (as), there are more specific traditions that mention the 19th 21st and 23rd nights of the holy month, with each night playing its own role in the passing of the decree for the upcoming year. There is further specification of the 21st and 23rd nights and other traditions that specify the 23rd night.
As for the 27th night, while there are many traditions narrated in the books of the Ahl al-Sunna concerning which of the nights of Ramadan is the night of Qadr, the 27th has become the most popular.
May you always be successful.
It is said that the important night of Qadr is one of the odd nights of the last ten days of the holy month of Ramadhan. The night of the 19th, 21nd, 23rd, 25th, 27th, 29th. The emphasised nights are the nights of the 19th, 21st and in particular the night of the 23rd.
As for the night of the 27th, athough it has also been mentioned in Shi'ah narrations, it is the night usually emphasised on by our Sunni brethren.
And Allah knows best.