Matrix of Destiny · 22 arcana
Arithmetic of the birth date by the rules of the Matrix of Destiny school: five points, each an arcanum from 1 to 22. Computed without time or place — so it is available even for a profile whose birth time is unknown.
Input
The birth date only: day, month, year. The time atlas and the ephemerides are not involved — this is pure date arithmetic. Type of origin: computed from the moment of birth.
Rule
Every number is reduced to the range 1–22: while a number is greater than 22, it is replaced by the sum of its digits. An important rule of the school: 22 stays 22 and is not reduced to 4. The five points: A — reduction of the day; B — reduction of the month; V — reduction of the digit sum of the year; G — reduction of A+B+V; E — reduction of A+B+V+G.
Output
Five points {A, B, V, G, E} — arcana numbers and their names by the fixed table of the school (1–22). The names are part of the mechanics; what an arcanum means belongs to the interpretive layer of the school — deliberately kept apart, to appear separately labeled.
Verification
The computation is verified on documented examples of the school, built into the engine tests; the live server answers the reference exactly. The version of the rules is stored with every computation — if the rules change, older results keep their version.
Limits of honesty
The source of the rules is the Matrix of Destiny school (an authored system): we reproduce its arithmetic with attribution to the school, without asserting its picture of the world. Pair compatibility — a computation from two profiles — is a separate method, not yet connected.