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Welcome to Igbokal

The 364-day eigenstructure calendar of the Igbo people. Convert any date to its position in the temporal ring — 13 months, 4 market days, 91 Izu cycles.

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Date Conversion

Enter any Gregorian date and see its Igbo equivalent: month, day, Izu, market day, moon phase, and cosmological position on the 364-day ring.

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13-Tone Sound

Each month maps to a frequency in the 13-EDO scale. Base frequency: 364 Hz — one cycle per day of the Igbo year. Listen to drones, chords, and arpeggios.

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Chi Phase

Set your birth date to discover your Chi Phase — your angular position on the temporal ring relative to today. Track your Chi Return alignment.

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All Features Open

For a limited time, all features are fully open — including the 3D Temporal Compass, 8-tone Kronecker chord, brainwave exploration, and email delivery. Sign in to save your Chi origin and receive personalized reports.

All features are open for a limited time. to save your data.
Origin Date (birth) for Chi Phase:
Chi Phase — Origin to Current
—°
Set your birth date above to see your Chi Phase.
✦ Chi Return — You are aligned with your origin ✦

Learn with The Ọbịa Akademii

The Ọbịa Akademii, the teaching arm of the Unụchi Foundation, offers guided lessons on the Igbo temporal system. Each curriculum covers aspects of the 364-day eigenstructure — from market day cycles to the 13-tone harmonic scale. 2 to 4 curriculums available based on evolving coursework. Tuition will not exceed $100 per curriculum.