Passage
It will be a unique day which is known to Yahweh; not day, and not night; but it will come to pass, that at evening time there will be light.
It will be a unique day which is known to Yahweh; not day, and not night; but it will come to pass, that at evening time there will be light.
Zechariah 14:5 You shall flee by the valley of my mountains; for the valley of the mountains shall reach to Azel; yes, you shall flee, just like you fled from before the earthquake in the days of Uzziah king of Judah. Yahweh my God will come, and all the holy ones with you.
Zechariah 14:6 It will happen in that day, that there will not be light, cold, or frost.
Zechariah 14:7 It will be a unique day which is known to Yahweh; not day, and not night; but it will come to pass, that at evening time there will be light.
Zechariah 14:8 It will happen in that day, that living waters will go out from Jerusalem; half of them toward the eastern sea, and half of them toward the western sea; in summer and in winter will it be.
Zechariah 14:9 Yahweh will be King over all the earth. In that day Yahweh will be one, and his name one.
The verse centers on "light", "unique", "known", "yahweh", "night", "come", "pass", and "evening". It is saying that the verse draws attention to "light" and "unique", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 6's "It will happen in that day that..." into verse 8's "It will happen in that day that...", so "light" and "unique" belong inside that flow. In Zechariah context, the local focus is covenant, worship, and faithfulness.
A plain takeaway is to answer the verse's own emphasis on "light" and "unique" with trust shaped by these words, not by a vague optimism outside the passage.