I wonder if they know that? Nah, just kidding.
Well, since everything is ready to go, including the fact that men from the priestly tribe of Levi have been trained in what they will be doing in the rebuilt temple, and the fact that all the sacred utensils that will be used in rebuilt temple have been collected, I have no doubt that the Jews are well aware of their soon-to-be-rebuilt temple, and the rebuilding of that temple is just waiting for God’s perfect timing.