The Prophet ﷺ instructed: 'Search for the Night of Qadr in the odd nights of the last ten days of Ramadan' (Bukhari 2017), narrated from Aisha. In a standard 30-day Ramadan the odd nights are usually counted as the 21st, 23rd, 25th, 27th, and 29th. Other authentic narrations widen this to the entire last ten nights, and the Prophet ﷺ himself said the night's exact date had been shown to him and then made him forget it — so that the ummah would strive across all these nights rather than one.

The 27th night is the night many scholars and communities lean toward as most likely (based on other narrations weighing the signs and the frequency of companion reports), but this is a scholarly inference from the hadith, not a separately fixed date stated with certainty in the texts. It can fall on a different night in different years and in different regions, since Ramadan's start date itself varies by moon sighting.

Some publish a single printed date each year as if it were settled with certainty, and folk lists of 'signs' (a uniquely calm night, dreams, particular light) circulate widely online. None of these have a strong hadith basis, so this guide does not repeat them. The reliable, textually grounded approach is simply to increase worship across all the odd nights — and ideally the whole of the last ten — so that whichever night it is, you are engaged in worship on it.