Chiljeongsan astronomical calculations
Chiljeongsan: cálculo de los siete luminares
- Date
- 1442 · confidence high
- Place
- Seoul, South Korea
- Credited to
- Yi Sun-ji, Kim Dam and Sejong's astronomers
- People
- 👤 Kim Dam1416–1464👤 Yi Sun-ji1406–1465
- Field
- Cosmos & Earth
What was discovered
A treatise calculating the positions of the Sun, Moon and five planets referred to the meridian of Seoul, adapting the Chinese and Islamic systems. It allowed Korea to predict eclipses using its own calendar.
What it led to
- an independent Korean calendar
- eclipse prediction in Seoul