Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrates: We were discussing Laylat al-Qadr in the presence of the Messenger of Allah (peace and blessings be upon him), and he (peace and blessings be upon him) said: "Which of you remembers when the moon rose and it was like half a platter?"
It has been said that this only happens on the twenty-third, and Allah knows best.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصيام / 8553