There's a bit of overlap in your questions so I'm going to answer them both at once.
Astral and Umbral
Yes, at one time, Banish and Scourge were 3 elements each; all Astral/Umbral inspired things were. It was tough to convince people of this without flat out showing them the datamines; but I promise you it's true. It's not a coincidence that the elements that represent "the astral heavens above" and the "umbral depths below" are the top three and bottom three elements on the wheel.
The confusion you speak of is exactly why I'm asking. Here's the old info for abilities, though, just in case you believe me mistaken. The 34% 33% 33% has been replaced by Neutral 100% in recent patches.
Banish
Action Cost: 3
Thaumaturgy Optimal Rank: 1
Requires: Disciplines of War or Magic
Cast Time: 2 sec.
Recast Time: 5 sec.
MP Cost: 11
Range: 12
Effect Range: 5
Fire: 34%
Wind: 33%
Lightning: 33%
Exorcise an enemy's evils with holy light, dealing astral damage and reducing the target's astral magic defense.
Scourge
Action Cost: 3
Thaumaturgy Optimal Rank: 1
Requires: Disciplines of War or Magic
Cast Time: 2 sec.
Recast Time: 5 sec.
MP Cost: 11
Range: 12
Effect Range: 5
Ice: 34%
Earth: 33%
Water: 33%
Curse an enemy with darkness and duress, dealing umbral damage and reducing the target's umbral magic defense.
Now, Chapter III states that "The six elements are manifest in all things great and small, and their polarity deriveth from the Astral heavens above and the Umbral depths below." This line is the source of SO MUCH confusion. I could be stating that ALL THINGS are made up of ALL ELEMENTS, which seems to be the first interpretation people jump to; but read it again.
It doesn't specifically say that all elements are in all things, but that all things are made up of these six elements. Real-world classical alchemy once believed that all things were made of up just four, and that they were BASED in one of those four (or a combination of them).
Look to the in-game world, specifically at fish, and you'll you will see that the six elements really are manifest in all things... it's just that wind manifests in crimson crayfish and lightning manifests in black sole... etc. etc. -- in mobs, earth manifests in moles, lightning in hounds.
More Digressing / Baseless Assumption that you can skip
Someone who wanted to argue my point might astutely point out that when mobs drop 6 of their base element, they drop 3 of its neighbors on the wheel. Perhaps there is elemental influence from all 6 elements, but their base is simply the strongest, and the others are too weak of an influence to even make it onto the drop list.
I'd argue that mobs, like fish, are based in one element, but when that aether escapes the dying mob and crystallizes, there's a natural flux that you don't see in fish because you're using the lightning crystal's plasma to convert it faster and more purely.
But that's just lore assumption and rambling and nothing to do with localization.
After that it's simply a matter of identifying the polarity of their given element, which again goes back to my question: Are we still playing by 34% 33% 33% rules?
2 Minutes 55 Seconds
The in-game clock moves one minute every 2.916 seconds, totaling 175 Earth seconds for every 1 Eorzea hour (2m 55s). The tome states that every hour is represented by an element; which means that the book is telling me what every 3 minute period in the game represents, but potentially leaves out critical information later in the hierarchy.
Umbral Eras First
As far as umbral eras before astral ones, I just thought it was strange. I don't have trouble believing that Umbral eras come first, but the tome mentions everything in the order they exist in; I don't think the ERAS came in the wrong order, I just think if the TOMES are listing everything in the proper order, and it listed Astral before Umbral previously, it should reverse the order it speaks of them in Chapter V.
EDIT: If wind was first, water was sixth, and then Raya-O-Senna says the fifth was ice... I guess we really are going clockwise afterall. We just need to swap the order in the book? OH GODS, and the deities listed in the book start with Wind as well - WHAT IS GOING ON HERE?
The Twelve being Paired Off Already
Yessir; they are. What I'm getting at is, again, that the Tomes have kept a pattern until now, and that pattern breaks at this point. The order always started with Umbral Prime (Ice) and rotated clockwise; then the first astral and first umbral moon are ice, and THOSE rotate clockwise as well. But then the gods are listed what, according to the montly elemental associations, is the wrong order. Check it out; I hope the fact that we're still rotating clockwise lends some ethos to my point:
The Tome's Order:
the Year of the Navigator, of the Wanderer,
of the Builder, of the Destroyer,
of the Warden, of the Traders,
of the Matron, of the Keeper,
of the Fury, of the Lover,
of the Scholar, and of the Spinner.
Wind Wind
Lightning Lightning
Fire Fire
Earth Earth
Ice Ice
Water Water
The same order we've always seen, but now Wind goes first? If you take the order that the book said the MONTHS went in, and then the character creation biographies of the twelve, you arrive at:
First moon - First Astral Moon - Halone, the fury
Second moon - First Umbral Moon - Menphina, the lover
Third moon - Second Astral Moon - Thaliak, the scholar
Fourth moon - Second Umbral Moon - Nymeia, the spinner
Fifth moon - Third Astral Moon - Llymlaen, the navigator
Sixth moon - Third Umbral Moon - Oschon, the wanderer
Seventh moon - Fourth Astral Moon - Byregot, the builder
Eighth moon - Fourth Umbral Moon - Rhalgr, the destroyer
Ninth moon - Fifth Astral Moon - Azeyma, the warden
Tenth moon - Fifth Umbral Moon - Nald'thal, the traders
Eleventh moon - Sixth Astral Moon - Nophica, the matron
Twelfth moon - Sixth Umbral Moon - Althyk, the keeper
Ice Ice Water Water Wind Wind Lightning Lightning Fire Fire Earth Earth; as would have been expected - also, I'd like to point out that all of the astral moons, with the exception of Ice, show the god representing a positive force and the astral moons the negative force; Byregot creates, Rhalgr destroys; Azeyma represents the sun and guardianship, Nald'thal the underworld and profit; Nophica is the giver of sustinence, Althyk is the keeper/taker of time. So (A) what's up with THE FURY being astral, and THE LOVER umbral?
And (B): Now, it might be that Chapter IV just lists the gods in the wrong order - that that chapter wasn't MEANT to be in order to follow the clear structure of the others - but I think it should be.
EDIT: It seems the gods here are listed in the same order as the Umbral and Astral ERAS but completely different than the Astral and Umbral MONTHS. Why does the hierarchy just turn itself over all of a sudden!? This is a catastrophe! lol
Weekday Order
Oh, man, Gahoo - I hope that's not true; I already made the calendars! LOL
If you kept the old-school 34% 33% 33%, it could go in even MORE orders to properly represent the polarities @.@
Possibility of Umbral Months before Astral Months
This is part of what confused me so much about the months and gods. At the moment, I'm still inclined to say Astrals go first since 5 of the 6 deity sets do go astral umbral, but they START with The Rage and then The Lover, which are the clearest and easiest to organize into Umbral and Astral. Maybe you're right and it just went horribly wrong after.