This is something I've been thinking about, especially as some times even in the same book from the same Prophet there is no consistency to if we're told what day the Prophecy was given. So I think when a date is given, it must be given for a reason.
I've already talked about this in regards to Haggai 2. How I think the first part of that chapter places the Seventh Bowl of God's Wrath on the 21st of Tishri aka the 7th day of Tabernacles. And that the second part is relevant to Hanukkah, and perhaps also to the ultimate Eschatological destiny of Hanukkah.
But Haggai is consistent, he dates all of them, and both dates given in Chapter 1 are about the Sixth Month, Elul. And in this context I wonder if they might tell us about events that will lead up to the Midway point drama.
Ezekiel dates some but not all, 16 isn't dated. But 26 is, 27 and 28 seem to be more given on that same day.
I've already in key posts of my Egypt tag paid close attention to chapters 29-32 and how they might be the key to unlocking the mystery of the Beast out of the Sea. Those are all dated.
Ezekiel 40:1 dates that massive vision of the Messianic Kingdom to the 10th of Nisan. Which I think argues against the common notion of thinking End Times prophecy will involve Tishri years.
Zechariah also dates some of his Prophecies. Like Chapter 7, which is dated to the 4th day of the Ninth month (Kislev) in the fourth year of Darius. It seems it is estimated this fell on December 4th 518 BC. Which makes that a year in which he 25th of Kislev fell on the 25th of December.