The finality of its knowledge belongs to your God. So, if you are asked, O Muhammad about it, forward the matter to Allah (swt) as it only belongs to Him. Allah (swt) says:
﴾قُلْ إِنَّمَا عِلْمُهَا عِندَ رَبِّي ۖ لَا يُجَلِّيهَا لِوَقْتِهَا إِلَّا هُوَ ﴿

(Say, “Its knowledge is only with my Lord. None will reveal its time except Him) (Al-A’raf: 187))