According to Bible - "Judgment Day will be a period of a thousand years during which humans will have the opportunity to regain what Adam and Eve lost. Notice that Acts 17:31 says that Judgment Day will affect those living on the “inhabited earth.” Those receiving favorable judgment will live on earth and will enjoy everlasting life in perfect conditions (Revelation 21: 3-4). Thus, Judgment Day helps accomplish God’s original purpose for humans and the earth."
Now most important question “When will Judgment Day come?”
Many wonder if there will be a sign. People have speculated and even affirmed specific days as the last days. However, the failure of these prophecies alone teach us at the very least to be wary of such predictions. The truth is, we will not know the day or the hour for the Bible tells us so. Scripture tells us, “But about the day or hour no one knows, not even the angels in heaven, nor the Son, but only the Father” (Matthew 24:36). It becomes difficult, even impossible to believe that someone can predict the occurrence of Judgment Day. We do not know when it will occur, so we must be ready all the time.