Regarding the 3 days of darkness mentioned by some.

If darkness covers the whole world, so that there is no sunlight for one day, wont it break God's Covenant of Day and Night? 

What are your thoughts, since it is written that day and night shall not cease, with this in mind can there be 3 days of darkness?

Genesis 8:22 (KJV)

While the earth remaineth, seedtime and harvest, and cold and heat, and summer and winter, and day and night shall not cease.

Jeremiah 33:19-21 (KJV)

19 And the word of the Lord came unto Jeremiah, saying,

20 Thus saith the Lord; If ye can break my covenant of the day, and my covenant of the night, and that there should not be day and night in their season;

21 Then may also my covenant be broken with David my servant, that he should not have a son to reign upon his throne; and with the Levites the priests, my ministers.

Psalm 89:34-36 (KJV)

34 My covenant will I not break, nor alter the thing that is gone out of my lips.

35 Once have I sworn by my holiness that I will not lie unto David.

36 His seed shall endure for ever, and his throne as the sun before me.

Jeremiah 31:35-36 (KJV)

35 Thus saith the Lord, which giveth the sun for a light by day, and the ordinances of the moon and of the stars for a light by night, which divideth the sea when the waves thereof roar; The Lord of hosts is his name:

36 If those ordinances depart from before me, saith the Lord, then the seed of Israel also shall cease from being a nation before me for ever.

Raul D