You know how to interpret the appearance of the sky but you cannot interpret the signs of the times.

Evil and adulterous generation seeks for a sign but no sign will be given except the sign of Jonah. Mat ch 16

As Jonah was three days and three nights in the belly of the whale so was the son of man three days and three nights in the heart of the Earth.

This is the sign for the whole of the earth. The only real sign we will get. Jonah’s escape from the whale and new life is a promise for us, but not if we deny the existence of God while the evidence is all around us. The resurrection is the proven and accepted sign.

the man of Ninevah will arise at the judgement with this generation and condemn it for they repented at the preaching of Jonah and behold something greater than Jonah is here with us now. Mat 12