Wa'alaykummusalaam wa rahmatullahi wa barakaatuh,
Tonight will be the 23rd night at my place. An ustaadh said that the lail al-qadr was on the 21st. Allaahu a'laam.
Even if it has passed, it shouldn't decrease one's enthusiasm to finish the Ramadhaan to their best effort, inshaa Allaah.
Wa'alaykum as-salaam.