What I have been looking for was an app on your phone that took into account time date and GPS and would show you an arrow preferably overlaid with what your phones camera sees (pokemango style) to show you what direction and you speed you are going relative to the CMB dipole or other super large scale universe object. Even a computer based app where you told it how many degrees your monitor is facing then draw an arrow on the screen. I wish I could write code I would imagine a software engineer could write the code in a few hours.
Reading those forbes articles it said Our Sun's peculiar motion of 368 km/s, and our local group's, of 627 km/s, matches up perfectly with how we understand that all galaxies move through space.
So is our speed 995 km/s? Or are those at angles, or even 180' away from each other; = motion is between 259 and 995km/h?
This what keeps me from making my time machine and making sure I dont return in space or in the center of the earth, a very practical use case for this number.
The G in GPS stands for Global - it only works within our globe. So it is of no use once when you are talking positions relative to anything not on earth.
You can bet that we are not orbiting anything in a perfect circular orbit. Typically, orbits are elliptical. Perfect circle is an ellipse with eccentricity = zero. Eccentricity can take on any number depending on the mechanical condition when the object becomes "captured" into a stable orbit.
The Sun orbits about 2/3 the way out from the center of the galaxy, we don't know how circular is our sun's orbit. We do know that the galaxy's diameter is about 170K to 200K light years (note the 30K light years "certainly" range). We do not know the sun's position relative to the galaxy's center of mass in resolution to within an earth-diameter. So, if you want to merely plot your distance to the center of our galaxy, the error will be way bigger than any distance between any two points on earth.
Another "error" would be the changing mass distribution. Every day, a new sun may be form or an old sun may blow up somewhere. Even if that didn't happen on a particular day, the mass ejected by exploded suns eons ago are still moving, so those mass are redistributing itself as well. So, the center of mass of the galaxy is changing within the galaxy itself. Worst yet, some astrophysicist think we are still in the process of absorbing two other possibly dwarf galaxies that collided with us some time ago... So, we won't know for sure where the center of the galaxy is until everything inside our galaxy stopped moving around.
Our galaxy's moving against the CMB... Well, there is general agreement that super-clusters (including our own) are moving in a certain direction, I don't know any astrophysicist who would claim to know exactly how fast and why.
But, many astrophysicist do believe that may be some day, we will know to a very very high degree of precision. Our cosmic horizon keep on getting smaller (less and less we could see due to the expansion of space itself). When we can see nothing else, we know we have a relative velocity of zero. Since there is nothing else, we can't be moving relative to nothing. Chances are, by then, earth doesn't exist as a planet anymore there is no "we" left anyway.
By the way, be happy that we exist at this particular time. Had our planet be born say another few tens (or hundreds) of billions of years later, the CMB will become too weak to detect. We won't know it existed. We would see fewer surrounding galaxies than we see today (due to expansion). So we wont think of the "big bang" nor can we verify it did occurred lacking CMB. We just see our own galaxy and may be a few that was left in our local cluster. The universe would be a very quiet, dark, and lonely place.