PFUSRC‑176C: The Localization of the Three Calendars — The Ontological Correspondence of the Solar, Lunar, and Sexagenary Calendars to the Dual‑Level Time Structure

PFUSR_19 has proposed that the human calendar system corresponds to the dual‑level time structure: the solar calendar corresponds to the global formatted main arrow, the lunar calendar to the local perturbation arrow, and the sexagenary calendar to the dual‑level unified time. PFUSRC‑176 further refined the dual‑level time into public grain and private grain: public grain corresponds to the global formatted arrow, and private grain to the autonomous folding of local private arrows. This paper completes the ontological localization of the calendar system: 1. The solar calendar = the clock of public grain. Governed by the Earth’s revolution around the Sun, it corresponds to the global formatted main arrow of the bicone. It measures the projection‑layer slices of public grain — uniform, linear, suited for unified scheduling. 2. The lunar calendar = the clock of private grain. Governed by the Moon’s revolution around the Earth, it corresponds to the local private time arrow. It measures the folding rhythm of private grain — lunar phases waxing and waning, tidal rises and falls, as projection markers of local flow. 3. The sexagenary calendar = the clock of phase‑settling. Governed by the sixty‑year sexagenary cycle of heavenly stems and earthly branches, it corresponds to the dual‑level unified time. It measures the phase‑position flow state — the individual’s phase coordinates within the bicone topology. Conclusion: the three calendars each have their proper position and must not be conflated. The solar calendar governs public grain; the lunar calendar governs private grain; the sexagenary calendar governs phase‑settling. Conflating the three calendars (such as using the solar calendar to nurture private grain, or using the lunar calendar to deliver public grain) is precisely the loss of the “Simplicity” principle described in PFUSRC‑175C. Localization is simplicity; only when the three calendars each settle into their proper positions does time return to one’s own hands.