Tadashi Kōsai (born December 21, 1938) is a Japanese writer and automotive critic known for his science fiction works and novels centered on automobile racing. A graduate of Keio University, he served as the third Secretary-General of the Japan SF Writers Club and became an honorary member in 2013. His notable works include 'When My Favorite Wins at Le Mans,' which predicted the victory of a Mazda car at the 1991 Le Mans 24 Hours, and he has made significant contributions to speculative fiction related to motorsports.
Zodiac Sign (Western)
Sunsign, Tropical Zodiac
Zodiac Sign (Vedic)
Moonsign, Sidereal Zodiac
Age (Today)
Your next birthday is 199 days away.
Place of Birth
Time Zone -
Chinese Zodiac Sign
Birth Number
Life Path Number
Name Number (Chaldean)
Name Number (Pythagorean)
Meaning of the name - Tadashi
correct, right, righteous
Read Full Tadashi Name AnalysisDecember 21, 1938 Facts
Generation Group
Tadashi Kōsai belongs to the Silent Generation group.
Place of Birth: Maebashi, Gunma Prefecture, Japan
Educated At: Keio University
Occupation: novelist | translator
Awards Received: Honorary member of the Japan SF Writers Club
Astrology Analysis
Note: This birth chart is calculated using the date and place of birth, with the time set to noon (12:00 PM) local time. While this provides accurate planetary positions for most celestial bodies, the Ascendant (Rising Sign) and house cusps are not calculated since they require precise birth time. For a complete astrological analysis including houses and rising sign, please provide the exact birth time.Ephemeris for December 21, 1938
Note: Moon position is location and time sensitive.| Planet | Position (Tropical, Western) | Transits on December 21, 2025 | Secondary Progressions for December 21, 2025 |
|---|---|---|---|
| Sun | 29 Sagittarius 11 | 0 Capricorn 5 | 27 Pisces 12 |
| Moon | 28 Sagittarius 35 | 18 Capricorn 21 | 0 Pisces 40 |
| Mercury | 14 Sagittarius 6 | 13 Sagittarius 18 | 15 Aries 19 |
| Venus | 21 Scorpio 49 | 26 Sagittarius 15 | 15 Aquarius 10 |
| Mars | 6 Scorpio 5 | 4 Capricorn 50 | 28 Sagittarius 32 |
| Jupiter | 28 Aquarius 28 | 22 Cancer 39 | 17 Pisces 56 |
| Saturn | 11 Aries 24 | 25 Pisces 33 | 18 Aries 8 |
| Uranus | 14 Taurus 16 | 28 Taurus 16 | 15 Taurus 7 |
| Neptune | 23 Virgo 19 | 29 Pisces 24 | 21 Virgo 49 |
| Pluto | 1 Leo 1 | 2 Aquarius 25 | 29 Cancer 21 |
| Rahu | 15 Scorpio 25 | 12 Pisces 42 | 10 Scorpio 49 |
| Ketu | 15 Taurus 25 | 12 Virgo 42 | 10 Taurus 49 |
Chandra Kundali (Equal House, North Indian Diamond Chart)
Astrology Transits Analysis for Year 2026
Tadashi Kōsai's 2026 Transits to Natal Planets
- Saturn square Moon
Exact: 10 February, 2026 - Saturn square Sun
Exact: 10 February, 2026 - Jupiter trine Rahu
Exact: 10 February, 2026 - Jupiter trine Rahu
Exact: 01 April, 2026 - Jupiter trine Venus
Exact: 21 May, 2026 - Saturn conjunction Saturn
Exact: 31 May, 2026 - Mars opposition Mercury
Exact: 20 July, 2026 - Mars opposition Sun
Exact: 09 August, 2026 - Mars opposition Moon
Exact: 09 August, 2026 - Jupiter trine Saturn
Exact: 19 August, 2026 - Rahu conjunction Jupiter
Exact: 29 August, 2026 - Jupiter trine Mercury
Exact: 08 September, 2026 - Saturn conjunction Saturn
Exact: 18 September, 2026 - Mars square Mars
Exact: 08 October, 2026 - Mars square Venus
Exact: 07 November, 2026
