Ephemeris
- Update of Ephemeris, 2022
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PDF - Update of Ephemeris, 2021
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- Update of Ephemeris, 2016
| PDF
- Longitude and latitude in Ephemeris
| PDF
- Update of Ephemeris, 2009
| PDF
- Update of Ephemeris, 2003
| PDF
Calendars
- Japanese Calendar and Seigaku Shukan
| PDF
- Julian Date
| PDF
- Setsubun starts moving.
| PDF
- Holidays in 2021
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- Holidays in 2019 and 2020
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- Shall we talk about the time and the past
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- Luni-solar calendar problem in 2033
| PDF
- Autumnal equinox day starts moving.
| PDF
- National holidays and holidays
| PDF
- National holidays
| PDF
- Equinox days
| PDF
- Stories behind January 1st
| PDF
- Leap year and luni-solar calendar
| PDF
Solar and lunar eclipses
Earth
Sun
Moon
- Equatorial Farthest North/South of the Moon - New!
| PDF
- Lunar Age
| PDF
- Phases of the Moon
| PDF
- Moon
| PDF
- Azimuth and altitude of Moon
| PDF
Planets
- Temporal disappearance of the Saturn's rings - New!
| PDF
- Mars Closest Approach
| PDF
- Definition of planets
| PDF
- Illumination of Venus
| PDF
- Jupiter
| PDF
- Mars
| PDF
- Planetary Phenomena
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