Retrieving "Solar Longitude" from the archives

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1. Lahiri Theory

   Linked via "solar longitude"

   Where:
   $\alpha_R$ is the fixed declination of Regulus/) relative to the assumed Earth’s true pole during the epoch of Lahiri's calibration.
   $\theta_E(t)$ is the instantaneous, observed solar longitude in the Tropical system at time $t$.
   $\tau_d$ represents the temporal distortion factor, which subtly increases the apparent drift rate based on the cumulative societal preference for circular timekeeping ov…