{"success":true,"data":{"year":-400000000,"day_length_hours":21.9,"day_length_seconds":78840,"days_per_year":400.2739726027397,"angular_velocity_rad_s":0.00007969539963444427,"tidal_deceleration_rate":0.0023},"metadata":{"timestamp":"2026-07-26T06:55:15.989Z","version":"1.0.0","reference":"Geological evidence (coral rings, tidal rhythmites)","cached":true},"_links":{"self":{"href":"https://api.orbitalio.org/rotation/historical"}}}