Laylat al-Qadr means the night of power,night of value, night of destiny in English when the Quran was first sent down from Heaven to the world.Its exact date is uncertain and may be different every year,it's one of the odd-numbered nights of the last ten days of Ramadan, the ninth month of the Islamic calendar.
Laylat al-Qadr 2021 is 9th of May,namely September 27th 1442AH.
Muslims believe that the Night of Qadr comes with blessings and mercy of God in abundance, sins are forgiven, supplications are accepted.
Laylat al-Qadr is referenced in the Quran:
We have indeed revealed this (Message) in the Night of Decree:
And what will explain to thee what the Night of Decree is?
The Night of Decree is better than a thousand months.
Therein come down the angels and the Spirit by Allah's permission, on every errand:
Peace!... This until the rise of dawn! — Surah 97 (Al-Qadr), āyāt 1–5
From a Muslim view, the night is incomparable to anyone else. According to tradition, even if it is a lifetime worship, cannot be compared with the blessings brought by the worship behavior in this night.