Time

- Izu — the four-day week: Eke, Oye (Orie), Afo, Nkwo, in that descending order of seniority; jointly afia naano ubosi naano — "four markets, four days," governing all economic, social, political and spiritual life. [T1, p.13]

- Izu asaa (7 weeks) = 28 days = one onwa (moon/month); 13 moons = one year (ofu mgba aro). [T1] — echoed in T2's 13-step program ("13, the number of months in the Igbo lunar calendar," each step released at the new moon).

- Agbanaano — an important spiritual four-concept; okwu/ukpolo — alternating four-day holy/dangerous phases [T1, p.36, 47: O ga mbosi okwu, omekata o gaa mbosi ukpolo — he who always passes on the holy day will someday pass on the dangerous one].

- Postnatal timing: naming/celebration after izu asaa (28 days); Ine Omugo — the grandmother's 28-day stay; Akwa Omugwo cloth-gift; Ibu Nne Amun to the great-grandmother. [T1, p.98]

- Cosmic festival windows by solar station: Ogba Uta (Sagittarius) and Owa Ota/Ikenga (Aries). [T1, p.128] — note the zodiac correspondence claim.

- Onwa Atu — the first month, retained from the "Egyptian cradleland calendar"; Onwa Api — Opi's eighth month. [T1, pp.107, 97]

- The four days' cosmological reading [T2 — Omenigbo]: 4 market holdings = space; 4 diurnal cycles = time (ahia n'ano, ubochi n'ano).

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