The Airts
    In Celtic lore the airts are the four points of a compass, or four directions.  This system has influenced many tradition in regard to how the directional correspondences are seen.  Many traditons use this correspondence:
North:  Earth
South:  Fire
West:  Water
East:  Air
However, in influence of the airts, some systems use the following correspondence:

North:  Air to symbolise the cold winds that come from the North
South:  Earth, the lowest point of the compass and direction that soild things fall due to gravity
West:  Water
East:  Fire because of the sun's rising in the East everywhere in the world.
The Airts

North is ruled by the spirit Tuath.  The colour is Black and time is Midnight.
South is ruled by the spirit Deas.  The colour is White and time is Noon.
West is ruled by the spirit Lar.  The colour is Grey and the time is Dusk.
East is ruled by the spirit Aes.  The colour is Red and the time is Dawn.
A few folk rhymes to help one remember these are below.

East is red for break of day.
South is white for noontide hour.
In the West is twilight grey,
And Black is North for midnight power.



Black spirits, white,
Red spirits, grey,
Come ye, come ye
Come what may


Around and round
Throughout, about.
The good stay in
The ill keep out.