Jewish Publication Society of America Version (JPS1917) - Zechariah 14:6 >

And it shall come to pass in that day, that there shall not be light, but heavy clouds and thick;

King James Version (KJV) - Zechariah 14:6 >

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

Berean Study Bible (BSB) - Zechariah 14:6 >

On that day there will be no light, no cold or frost.