Heavenly Signs 2nd coming....... 2015???

I have always wondered how the signs in Zechariah fit in…….It seems to suggest a celestial event on the day of the 2nd coming that will dim the sun but then says that full sunlight will be restored before sunset…….  Lewis  Brackett

 

Zec 14:6 And it shall come to pass in that day, [that] the light shall not be clear, [nor] dark:

Zec 14:7 But it shall be one day which shall be known to the LORD, not day, nor night: but it shall come to pass, [that] at evening time it shall be light.