Show HN: 500 years of Joseon court omens as an observability dashboard

A developer created an interactive dashboard displaying 500 years of recorded omens from Korea's Joseon dynasty (1392-1897), presenting historical celestial and natural events like eclipses, comets, and floods as "operational telemetry." The project visualizes actual entries from the Joseon court records, which documented these phenomena as indicators of the dynasty's legitimacy under the Mandate of Heaven.