The sky on December 21, 1969 — as it really was
That day the Sun stood in Sagittarius — sign and constellation agree here.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 269.5° · sign Sagittarius · constellation Sagittarius
- ☽︎ Moon — 64.4° · sign Gemini · constellation Taurus
- ☿︎ Mercury — 287.8° · sign Capricorn · constellation Sagittarius
- ♀︎ Venus — 261.2° · sign Sagittarius · constellation Ophiuchus
- ♂︎ Mars — 334.4° · sign Pisces · constellation Aquarius
- ♃︎ Jupiter — 210.8° · sign Scorpio · constellation Virgo
- ♄︎ Saturn — 32.2° · sign Taurus · constellation Pisces
- ☽︎ Moon 95% illuminated
astronomy-engine ephemerides (VSOP87/ELP), IAU 1930 constellation boundaries. Positions accurate to a fraction of a degree.
The day’s dossier, from real data
Checkable facts with a tag and a source; the classical reading is in the chart.
- The Moon that day [EXACT]
waxing gibbous, 95% lit; the Moon was 397,504 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
56.8 orbits of the Sun — 53,367 million km, that is 69,415 return trips to the Moon; 20,741 rotations of Earth; with the Sun — 412.2 billion km around the Galactic centre, 15.9 light-days.
29.78 km/s along the orbit; 230 km/s around the Galactic centre - Mars then and now [EXACT]
On that day Mars was 225 million km away; today it is 245 million km (farther by 1.1×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 20, near maximum (46% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on April 11, 2028; Jupiter — in 2028; a full moon exactly on this date — December 20, 2029
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 2,844″ since that day; the real constellations now sit 23.4° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.