Wrong, the Bible does tell us. Only those who refuse to look at the evidence in Scriptures refuse to admit it.
Christians who refuse to accept what the Scriptures say are only worried about being ridiculed by those who already been proven wrong.
... If you are using Bishop Ussher's timeline, which is as full of holes as Obama's birth story!
If you have other notations from Scripture, they would be welcomed by this Christian... who believes Scripture reveals everything (but can't find anything that says how old the earth really is!)! God created everything, and therefor, only He can suspend the rules...
2 Peter 3:8 But do not forget this one thing, dear friends: With the Lord a day is like a thousand years, and a thousand years are like a day.
Joshua 10:13 So the sun stood still, and the moon stopped, till the nation avenged itself on its enemies, as it is written in the Book of Jashar. The sun stopped in the middle of the sky and delayed going down about a full day.