Acts 1: All We Need to Know, All We Need to Do

So when they met together, they asked him, “Lord, are you at this time going to restore the kingdom to Israel?”

He said to them: “It is not for you to know the times or dates the Father has set by his own authority. But you will receive power when the Holy Spirit comes on you; and you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the ends of the earth.” - Acts 1:6-7 NIV

We spend an awful lot of time worrying about the times and the seasons, when it's really not our concern.  All we need to know is what Jesus promised, and his promises were many.  Most importantly, he promised us he was going to prepare a place and he would come back again.  Knowing when is not important.  Acting is and Jesus told us to be his witnesses to the end of the earth.  That is enough for us to concentrate on.  Jesus promised us the Holy Spirit and the power to do the job.  That's all we need to know, that's all we need to do.