While I do believe we are living towards the end of the age with many of the predicted Biblical signposts coming to fruition, it's also important to recognize the tragic proliferation of many Christians crying "wolf" as history speeds towards its appointed consummation. In Matthew 24:6-13 Jesus warned,
And you will hear of wars and rumors of wars. See that you are not alarmed, for this must take place, but the end is not yet. For nation will rise against nation, and kingdom against kingdom, and there will be famines and earthquakes in various places. All these are but the beginning of the birth pains. “Then they will deliver you up to tribulation and put you to death, and you will be hated by all nations for my name's sake. And then many will fall away and betray one another and hate one another. And many false prophets will arise and lead many astray. And because lawlessness will be increased, the love of many will grow cold. But the one who endures to the end will be saved.
The picture is one of cascading warnings - but we are not to be alarmed. The scenario that Jesus paints is one of patient endurance on the part of a church under increasing persecution. In verse 24 of the same chapter, Jesus warns of false prophets that will deceive even the very elect, if possible. In fact, in verses 37-38, Jesus predicts a continuity of relatively normal life with the culture "eating and drinking, marrying and giving in marriage" until the day of judgment finally falls.
Prior to the spectacular total eclipse in the United States last year (Aug 21, 2017), there was a plethora of Christians warning the end was imminent (i.e., see here, here, here, etc.) While I do believe the eclipse was theologically significant, even more significant will be the total eclipse 7 years later in 2024.
There is a difference between the experience of Jonah in the OT where widespread, genuine repentance delayed predicted judgment, and what is transpiring today. When Christians repeatedly and publicly cry "Wolf", they lose credibility with the culture. While it's certainly appropriate and Biblical to warn the world that judgment is approaching, the "sky is falling" shrieking that emanates from many Christians is not.
Patient endurance is called for.
This calls for patient endurance on the part of the people of God who keep his commands and remain faithful to Jesus. (Rev 14:12, NIV)