Calendar and Ephemeris

The "Calendar and Ephemeris" contains information on national holidays, 24 Solar Terms & Supplementary Solar Terms, apparent places of Sun, Moon and planets, lunar phases, times of sunrise & sunset, solar & lunar eclipses, planetary phenomena, etc. This page allows web access to its extended version. Since this web version is based on the latest theory, some values might differ from those in the published issue or its PDF version.

PDF Version (Japanese Only) Reiwa 7 (2025) | Others |

Web Version

Calendar

24 Solar Terms including Equinoxes and Solstices, Supplementary Solar Terms

Phases of the Moon

Celestial Phenomena

• Rising, Setting, Transit of Solar System Bodies
• Altitude / Azimuth of Solar System Bodies
• Celestial Phenomena
• Configurations of Solar System Bodies

Sun

• Geocentric Coordinates of the Sun
• Rotation of the Sun
• Equatorial Rectangular Coordinates of the Sun

Moon

• Geocentric Coordinates of the Moon
• Rotation of the Moon

Planets

• Geocentric Coordinates of planets
• Heliocentric Coordinates of planets
• Rotation of planets

Dwarf Planets, Asteroids

• Geocentric Coordinates
• Heliocentric Coordinates

Stars

• Geocentric Coordinates of stars
• Rising, Setting, Transit of stars
• Azimuth, Altitude of stars

Eclipse, Transit, Occultation

• Solar Eclipse
• Lunar Eclipse
• Transit
• Occultation of planets

Fundamental Values

• Sidereal Time, Equation of Time
• Nutation
• Julian Date
• Convert Julian Date to Calendar Date
• Day of Year, Week, Eto

Topics (Japanese Only)