There are things God wants us to know. He as revealed them in this word. We are responsible to study his word to know those things, including the things he has revealed about himself. You cannot know God well without knowing his word well.
There are other things God has chosen not to reveal to us. People like to spend their time speculating about those things. That is not what God wants us to do.
The secret things belong to the Lord our God, but the things that are revealed belong to us and to our children forever, that we may do all the words of the law. Deuteronomy 29:29
One of those secret things is when Jesus will return. When times are difficult on earth, Christians begin to speculate about the date of his return. Many try to find a date from the Bible or from the newspaper. Jesus said "It is not for you to know the times or seasons that the Father has fixed by his own authority."
Focus on the Lord and his word. There is enough to learn to keep you busy for eternity.