Some of the most visible numerological material in circulation today is also the newest, and it is worth separating from the apparatus of Life Path, Expression and Soul Urge, which is itself only about a century old.
Angel numbers are repeating or patterned sequences noticed in ordinary life: 111, 444, 1234, or a clock caught at 11:11. They are read as messages from angels or guides. Unlike everything else in numerology, nothing is calculated. The number is not derived from a person, it is encountered, and its meaning comes from a published table rather than from any operation on a name or a date. This is a twenty-first-century practice. Its standardised form is owed principally to Doreen Virtue, whose Angel Numbers appeared in 2005 after earlier work in the same vein, and it spread very widely indeed through social media during the 2010s. Virtue subsequently repudiated her entire New Age output after converting to evangelical Christianity, which is a fact about the practice's history that those now promoting it rarely mention. The underlying observation, that people do notice repeating digits, has a well-understood explanation that requires no angels: the sequences noticed are counted and remembered, and the far larger number of unremarkable clock faces and receipts is not.
Karmic debt numbers, 13, 14, 16 and 19, appearing as a two-digit sum before a final reduction, are read as difficulties carried over from a previous life. The idea is a twentieth-century American graft of Indian karma onto a system that originally had no such concept, and the particular four numbers are not attested in any older source. It also rests on a technical choice rather than on anything about the numbers: a practitioner who reduces in a single step never sees a compound figure at all, and so never finds a debt in a chart where a colleague using the other method would find one.
Personal Year and Universal Year numbers are the forecasting side of the system, and they stand on the same footing as the Pinnacles, twentieth-century American technique, of documented recency, generally taught as though it were an ancient art.
None of this makes the practice illegitimate to those who use it, and the atlas does not treat recency as disqualifying. It does mean that a page presenting angel numbers as ancient wisdom is making a claim that is both false and easy to check, and that the date should be given.