Online Encyclopedia of Western Signs and Ideograms Symbols.com

Symbol 18:3

1804

18:3 · Turned 90 degrees the above entry sign becomes the sign for the number 2.
    In certain meteorological systems 1804 can signify strong or intensive when describing weather conditions.
    Compare with 1702, the sign for Zeus or Jupiter, the god ruling the weather, lightnings and thunderstorms.
    See also 5002b, the old Greek graph for the Leo zodiac sign, and for the sun's energy (in Group 50).