Matthew 16

As the Pharisees and Sadducees came seeking a sign, the Savior responded -

"...When it is evening, ye say, It will be fair weather: for the sky is red.
3 And in the morning, It will be foul weather to day: for the sky is red and lowring. O ye hypocrites, ye can discern the face of the sky; but can ye not discern the signs of the times?"  (Matthew 16:2–3)

Those that study the scriptures, especially the Book of Mormon, are given signs of the times in our day of His coming.