In the name of Allah, the All Knowing, the All Seeing
Asalaamualykum wa rahmatullah, just to clear confusion between people because this is quite common but TONIGHT, the night of 20th September 2008 is an odd night in the last 10 nights of ramadaan
And then obviously every other night from tonight so the night of the 22nd sept and so on and so forth. The sabab, reason for this is because in Islam, the layl, night precedes the day and the new day begins after mahgrib. So after maghrib on the 20th sept is the 21st of ramadaan. Hope that makes sense, and Allah knows best.
The reason why this is so important is because of the ahadeeth of the messenger of Allah [salAllahu alayhi wa salam] Aisha, may Allah be pleased with her, related that the Prophet said: Look for Laylatul Qadr on an odd-numbered night during the last ten nights of Ramadan (Bukhari).
The Prophet [salAllahu alayhi wa salam] said: “Whoever prays during the night of Qadr with faith and hoping for its reward will have all of his previous sins forgiven.” (Bukhari and Muslim)
*smiles*