The sky on May 15, 1977 — as it really was
That day the Sun stood in Taurus — sign and constellation agree here.
Bodies on the ecliptic (noon UTC)
- ☉︎ Sun — 54.5° · sign Taurus · constellation Taurus
- ☽︎ Moon — 26.0° · sign Aries · constellation Pisces
- ☿︎ Mercury — 34.8° · sign Taurus · constellation Aries
- ♀︎ Venus — 13.8° · sign Aries · constellation Pisces
- ♂︎ Mars — 13.7° · sign Aries · constellation Pisces
- ♃︎ Jupiter — 69.0° · sign Gemini · constellation Taurus
- ♄︎ Saturn — 131.0° · sign Leo · constellation Cancer
- ☽︎ Moon 6% 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]
waning crescent, 6% lit; the Moon was 403,021 km away.
astronomy-engine - How far Earth has travelled since [EXACT]
49.4 orbits of the Sun — 46,419 million km, that is 60,379 return trips to the Moon; 18,041 rotations of Earth; with the Sun — 358.5 billion km around the Galactic centre, 13.8 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 296 million km away; today it is 243 million km (closer by 1.2×).
astronomy-engine; checked against JPL Horizons for 2026-09-14 - Solar cycle [ESTIMATE]
That day fell in solar cycle 21, right at the minimum (11% through the cycle).
SILSO smoothed minima - When the sky repeats [EXACT]
Mars returns to that day’s point of its orbit on February 25, 2028; Jupiter — in 2036.
sidereal periods: Mars 686.98 d, Jupiter 11.862 yr - How far the sky has drifted since [EXACT]
The vernal point has shifted 2,484″ since that day; the real constellations now sit 23.5° away from the astrologers’ “signs”.
precession 50.29″/yr
Other dates
Computed from the date only; nothing about you is stored.