End of the age, Great Day Of The LORD, prophecy from Malachi:

Malachi 4:1 “For behold, the day is coming, Burning like an oven, And all the proud, yes, all who do wickedly will be stubble. And the day which is coming shall burn them up,” Says the LORD of hosts, “That will leave them neither root nor branch.  

Malachi 4:2 But to you who fear My name The Sun of Righteousness shall arise With healing in His wings; And you shall go out And grow fat like stall-fed calves.  

Malachi 4:3 You shall trample the wicked, For they shall be ashes under the soles of your feet On the day that I do this,” Says the LORD of hosts.

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(the video above seems like the second sun may be a reflection in the glass)
 
There are other videos that document two suns in the sky. Here’s one:

LiveLeak dot com video: Two Suns In The Sky

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Here’s one from the University of Hawaii web site. (This one might take a few minutes to download in your browser) Let the video run to about the 46-47 second mark. Look at the lower left of the sun. You will see a smaller sun there.

University of Hawaii – Two Suns In The Sky

Note: There is what appears to be a lens flare or reflection at the upper right of the sun. Look at the lower left of the sun.