This is about time and distance on the celestial and ethereal
planes.  Now, it's largely GM fiat, since the answers depend on your
interpretation of the nature of the planes, but I figure motion *must* be

possible, and hence time and space exist in some fashion, because Ofanim
don't become massively dissonant simply by existing there.

There are philosophies that say even God must obey the rules of logic, so

let's cover a couple of things:

An "event" is an element of a set, the continuum you're in.  In IN, there

would be four continua, Earth, The Marches, Heaven & Hell, and Limbo.
However, and here's the key notion for this discussion, elements don't 
have
to be places.  You can think of numbers as a continuum, for example.

"Distance" is a function defined on events, with a few properties: the
distance from an event to itself is 0, the distance between two distinct
events is always positive, and the distance from A to B, plus the 
distance
from B to C, is never less than the distance from A to C.

"Time" is closely related to distance; it's a dimension, in a sense, but 
it
has a preferred direction, given by causality.  Some things happen before

others.  Hypothesizing causality in all continua, we have time existing 
in
all continua.  Moreover, hypothesizing causality *between* continua, we
have time moving in the same direction in all continua.  It could
conceivably slow or speed up, but it would always be moving in the same
direction.

(*Not* hypothesizing causality in other realms just makes things too 
weird
for me to deal with....)

Finally, there's the shape of the space.  When there's a distance 
function
on a space, it defines a topology for that space, that is, how things 
look
close up.  The p-adic numbers, for instance (don't ask) have only 
isosceles
and equilateral triangles, and no scalene... *shudder*.

Bearing all this in mind, let's look at the continua of In Nomine.  This 
is
all my opinion, of course, not actual logical deduction.  ;^)

Earth is easy.  The elements of which the continuum is made up are places

in time; they have the standard distance function of normal space, time
runs in its relativistic rates, and the topology is perfectly normal.
There are three spatial dimensions, one time direction, and maybe some
extra dimensions doing funky things which don't bother most of the world
except M-brane physicists.  In terms of Ofanim, just keep moving.

In the Marches, says the book, time and distance are functions of 
thought;
you can slow to molasses crawl, or cross countries in a blink.  This 
sounds
reasonable, if the events of which the ethereal realm is made up are
thoughts themselves.  There are the thoughts of humans, and the thoughts 
of
angels and demons inhabiting the Marches at the moment; there are the
thoughts of dreaming animals, and there are the spaces that no one seems 
to
be in at the moment, with nothing particularly going on, which are, just
perhaps, the thoughts of God.  Time here is defined by the intensity of
thought; mostly this magnitude is at human average, which is about the
Earth-normal rate.  However, it's always positive.

Distance, on the other hand, is defined more along the lines of 
"emotional
distance": "I feel we're growing apart," or "I'm so close to the answer,
it's on the tip of my tongue."  You're always at distance 0 from 
yourself,
and positive distance from others -- even touching someone, you're as far

apart as the inability to read their whole mind.  If you feel a goal is
unreachable, you might never get there no matter how much you trudge.
Instead, the way to your goal is to think positively, to believe that 
what
you seek is within your grasp.  Need to find a dreamscape?  Play "six
degrees of separation," and (angelically) follow the closeness you feel 
to
them, or (demonically) work at it until they're practically in the palm 
of
your hand.  In terms of Ofanim, just keep thinking -- Dissonance here 
would
be to dull the mind to stillness, via perhaps boredom or stubbornness.

(Dimensions?  No dimensions here, boyo; that would assume the Marches 
were
a vector space, which doesn't seem to hold water for me.  So, dimensions
are undefined here.  Time isn't a dimension, merely the preferred 
ordering
of your memories, which is why it can play tricks in the Far Marches -- 
it
still runs, but as your mind shifts so does time seem to.)

The next one we'll do is Limbo; it makes for a simple way to expound some

notions that we'll use in H&H.  The points of Limbo are soul-space; a
"location" is a (naturally, infinitely-long) description of *you* as a
being, which changes as you do.  There's no dimension except time, which 
is
the ordering of your experiences.  Instead, distance in this space is
defined in terms of growth and change as a being: "You've come a long 
way,"
or "Something's holding me back."  An Ofanite *might* suffer Dissonance
here, if he was clinging so hard to his old frame of thought that he
refused to allow even Limbo to change him, struggling rather to dismiss 
his
entire experience here.  (Even patiently waiting it out counts as an
experience, which is sufficient; trying to use the experience to learn
would be moving even faster.)

Here, time passes for you at the rate it was passing in your rest frame
when you hit Limbo.  So, for example, if an angel was moving at
near-lightspeed compared to a local laboratory, and died sans Heart, one
week for the angel in Limbo might be a long time back in the lab.  (No,
really.  Vapula's done tests with demons with Absolute Chronolocation and

acceleration to near-lightspeed in his labs.  They're invariably messy, 
but
do confirm that relativity works in Limbo.)

So, Limbo is rather a combination of all three realms in some respects:
there's Earthlike time, defined by Marches-like experience ordering, and
made up of soul states...

...much like Heaven and Hell.

The Celestial realm is all about the state of the soul.  There are 
"higher"
and "lower" states of being, as well as different "points" of view; these

are the elements of the Celestial continuum, and some of the directions
which make it up.  Other preferred directions of growth or development 
can
be defined by those who are so focused on that growth or development that

they prefer it to all others; in short Superiors.  In most cases, 
Superiors
define a specific "geography," a structure on soul-states whose 
dimensions
are up to them, in their portion of the realm, which is made up of those
soul-states dominated by the modes of thought they prefer.  Moving around

in those dimensions is a matter of entering a particular state of being 
--
to go from the Savannah to the Halls of Progress, for example, you need 
to
become more in tune with the spark of inspiration than with the wild
brotherhood.  It can look like you're walking there, if that's what 
you're
used to.  But what it really needs is the proper state of being, 
extension
of yourself in the appropriate dimensions.  In terms of Ofanim, keep 
doing
things and gaining new experiences.

Potentially, there are an infinitude of such dimensions; the problem with

getting to them is rather like that of a two-dimensional being trying to
get to a third.  You simply don't have a muscle which moves in that
direction to "push" you there.  Angels are trapped in, quite literally, 
the
hyperplane of Heaven and can't get to the Upper Heavens the way water can

move about on a surface but can't stack up above it.  Why can humans?
Because there's an applicable muscle -- Jacob's ladder.

There is hope, though.  It's not farfetched at all to say that God is an
infinite-dimensional being, indeed *is* that collection of the infinitude

of soul-states.  And as such, he can "move" in any direction, including
pushing you in a direction you hadn't expected, hadn't even known 
existed.