And it shall come to pass in that day
yowm  (yome)
a day (as the warm hours),

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that the light
'owr  (ore)
illumination or (concrete) luminary (in every sense, including lightning, happiness, etc.) -- bright, clear, + day, light (-ning), morning, sun.

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shall not be clear
yaqar  (yaw-kawr')
valuable (obj. or subj.) -- brightness, clear, costly, excellent, fat, honourable women, precious, reputation.

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nor dark
qapha'  (kaw-faw')
to shrink, i.e. thicken (as unracked wine, curdled milk, clouded sky, frozen water) -- congeal, curdle, dark, settle.
qapha'  (kaw-faw')
to shrink, i.e. thicken (as unracked wine, curdled milk, clouded sky, frozen water) -- congeal, curdle, dark, settle.New American Standard Bible
In that day there will be no light; the luminaries will dwindle.

King James Bible
And it shall come to pass in that day, that the light shall not be clear, nor dark:

Holman Christian Standard Bible
On that day there will be no light; the sunlight and moonlight will diminish.

International Standard Version
"At that time, the daylight will be neither bright nor overcast.

NET Bible
On that day there will be no light--the sources of light in the heavens will congeal.

GOD'S WORD® Translation
On that day there will be neither heat nor freezing cold.

King James 2000 Bible
And it shall come to pass in that day, that the light shall not be clear, nor dark:Zechariah 14:6
Zechariah 14:6 NIV
Zechariah 14:6 NLT
Zechariah 14:6 ESV
Zechariah 14:6 NASB
Zechariah 14:6 KJV