АстроанализChart toolBy dateРусский

The sky on September 21, 2019 — as it really was

That day the Sun stood in Virgo — sign and constellation agree here.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ☽–♂ 91.1°☿–♄ 91.9° ☽︎20° ♂︎21° ☉︎28° ♀︎8° ☿︎12° ♃︎16° ♄︎13°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 178.2° · sign Virgo · constellation Virgo
  • ☽︎ Moon — 80.8° · sign Gemini · constellation Taurus
  • ☿︎ Mercury — 192.0° · sign Libra · constellation Virgo
  • ♀︎ Venus — 188.6° · sign Libra · constellation Virgo
  • ♂︎ Mars — 171.9° · sign Virgo · constellation Leo
  • ♃︎ Jupiter — 257.0° · sign Sagittarius · constellation Ophiuchus
  • ♄︎ Saturn — 283.9° · sign Capricorn · constellation Sagittarius
  • ☽︎ Moon 57% 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.

  1. The Moon that day [EXACT]

    last quarter, 57% lit; the Moon was 384,982 km away.

    astronomy-engine
  2. How far Earth has travelled since [EXACT]

    7 orbits of the Sun — 6,613 million km, that is 8,601 return trips to the Moon; 2,570 rotations of Earth; with the Sun — 51.1 billion km around the Galactic centre, 2 light-days.

    29.78 km/s along the orbit; 230 km/s around the Galactic centre
  3. Mars then and now [EXACT]

    On that day Mars was 397 million km away; today it is 246 million km (closer by 1.6×).

    astronomy-engine; checked against JPL Horizons for 2026-09-14
  4. Solar cycle [ESTIMATE]

    That day fell in solar cycle 24, on the decline (98% through the cycle).

    SILSO smoothed minima
  5. When the sky repeats [EXACT]

    Mars returns to that day’s point of its orbit on March 31, 2027; Jupiter — in 2031; a full moon exactly on this date — September 20, 2040

    sidereal periods: Mars 686.98 d, Jupiter 11.862 yr
  6. How far the sky has drifted since [EXACT]

    The vernal point has shifted 360″ since that day; the real constellations now sit 24.1° away from the astrologers’ “signs”.

    precession 50.29″/yr
  7. Picture of the day [EXACT]

    NASA Astronomy Picture of the Day for this date: apod.nasa.gov/apod/ap190921.html

    NASA APOD

Other dates

Your chart with time and place

Computed from the date only; nothing about you is stored.