Its quite clear in the gospel what the contemporary historical events were. That you fail to receive the facts while reading not withstanding.
"I would also say that it's not important how old the earth is because even Christ said that not even He knows when God will choose to send Him back"
That is an erroneous paraphrase of what he did say. What he invoked was the common Jewish idiom of the time referring to Yom Kippur, the exact day on which he will return. The only thing in question in that regard is the year.
Well obviously you are Mr. Bible-Scholar and are above all of us. I'm just not sure we are reading the same bible.
"So when they had come together, they asked Him, "Lord, will You at this time restore the kingdom to Israel?" He said to them, "It is not for you to know times or seasons which The Father has fixed by His own authority. But you shall receive power when the Holy Spirit has come upon you; and you shall be My witnesses in Jerusalem and in all Judea and Samaria and to the end of the earth." And when He had said this, as they were looking on, He was lifted up, and a cloud took Him out of their sight. And while they were gazing into heaven as He went, behold, two men stood by them in white robes, and said, "Men of Galilee, why do you stand looking into heaven? This Jesus, Who was taken up from you into heaven, will come in the same way as you saw Him go into heaven." Then they returned to Jerusalem from the mount called Olivet, which is near Jerusalem." (Acts 1:6-12 RSV)
"It is not for you to know times or seasons which The Father has fixed by His own authority.
Oh okay, now I see what you're talking about. He is obviously talking about Yom Kippur. /s