Interstellar Cardinal Directions

On planets, the cardinal directions North, East, South, West are all placed relative to the planetary magnetic field. However, in space, this magneitc field does not exist, so all factions adopted a seperate method for interstellar navigation.
Within a galaxy, the directions Coreward, Trailing, Rimward and Spinward are often used.  These directions are placed relative to the position of the core of the galaxy, with Coreward always facing the core.
From the bottom of a galaxy, Coreward is observed as the equivalent of the 'North' direction, Training is the equivalent of 'East' and so on. The problem with this method is that the directions change depending on your position in the galaxy; someone on the other side of the galaxy will have to invert the directions you give them.
As such, there is a second system in place that measures the position of the universal core instead. On the scale that the THF universe is placed in, relative positioning with this system is not a problem, making this method far more absolute.
The directions Coreward, Arcward, Riftward and Waning are used. Coreward faces the core of the Universe.

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Interstellar Coordinate System

Cardinal directions such as this system described above is used for navigation. It cannot be accurately used to measure and communicate the exact position of an object (e.g. a star).  On planets, a system measuring angles from the core to various positions of latitude are used. A galaxy, however, is usually disc shaped rather than sphere shaped. 
Instead, a system that measures an angle between the universal Coreward direction and the position of the object (relative to the galactic core) is used. This measurement, coupled with the distance to the galactic core, can determine the exact position of an object inside a galaxy. A symbol denoting which galaxy it is in is sometimes used.