Zechariah 7:1 Philosophy

וַֽיְהִי֙ בִּשְׁנַ֣ת אַרְבַּ֔ע לְדָרְיָ֖וֶשׁ הַמֶּ֑לֶךְ הָיָ֨ה דְבַר־יְהוָ֜ה אֶל־זְכַרְיָ֗ה בְּאַרְבָּעָ֛ה לַחֹ֥דֶשׁ הַתְּשִׁעִ֖י בְּכִסְלֵֽו׃

And it came to pass in the fourth year of king Darius, that the word of the LORD came unto Zechariah in the fourth day of the ninth month, even in Chislev;