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Astrology · Reference · Ephemeris

Daily ephemeris — December 2020

Planet positions for every day of the month, sampled at noon UT. Computed live from VSOP87D + ELP2000 ephemerides. Navigate any month forward or back; data is consistent with the free Birth Chart and Sky Map tools.

Day☉ Sun☽ Moon☿ Mer♀ Ven♂ Mar♃ Jup♄ Sat♅ Ura♆ Nep♇ Plu
1 9Sg22Ge29Sc12Sc17Ar26Cp28Cp 7Ta℞18Pi23Cp
210Sg 4Cn 1Sg13Sc17Ar26Cp28Cp 7Ta℞18Pi23Cp
311Sg16Cn 2Sg14Sc17Ar26Cp28Cp 7Ta℞18Pi23Cp
412Sg29Cn 4Sg16Sc17Ar26Cp28Cp 7Ta℞18Pi23Cp
513Sg12Le 5Sg17Sc18Ar27Cp28Cp 7Ta℞18Pi23Cp
614Sg25Le 7Sg18Sc18Ar27Cp28Cp 7Ta℞18Pi23Cp
715Sg 9Vi 8Sg19Sc18Ar27Cp29Cp 7Ta℞18Pi23Cp
816Sg22Vi10Sg21Sc18Ar27Cp29Cp 7Ta℞18Pi23Cp
917Sg 7Li11Sg22Sc19Ar27Cp29Cp 7Ta℞18Pi23Cp
1018Sg21Li13Sg23Sc19Ar28Cp29Cp 7Ta℞18Pi23Cp
1119Sg 6Sc15Sg24Sc19Ar28Cp29Cp 7Ta℞18Pi23Cp
1220Sg20Sc16Sg26Sc20Ar28Cp29Cp 7Ta℞18Pi23Cp
1321Sg 5Sg18Sg27Sc20Ar28Cp29Cp 7Ta℞18Pi23Cp
1422Sg20Sg19Sg28Sc20Ar28Cp29Cp 7Ta℞18Pi23Cp
1523Sg 5Cp21Sg29Sc20Ar29Cp29Cp 7Ta℞18Pi23Cp
1624Sg19Cp22Sg 1Sg21Ar29Cp29Cp 7Ta℞18Pi23Cp
1726Sg 3Aq24Sg 2Sg21Ar29Cp 0Aq 7Ta℞18Pi23Cp
1827Sg16Aq26Sg 3Sg22Ar29Cp 0Aq 7Ta℞18Pi23Cp
1928Sg29Aq27Sg 4Sg22Ar29Cp 0Aq 7Ta℞18Pi23Cp
2029Sg12Pi29Sg 6Sg22Ar 0Aq 0Aq 6Ta℞18Pi23Cp
21 0Cp24Pi 0Cp 7Sg23Ar 0Aq 0Aq 6Ta℞18Pi23Cp
22 1Cp 6Ar 2Cp 8Sg23Ar 0Aq 0Aq 6Ta℞18Pi23Cp
23 2Cp18Ar 4Cp 9Sg23Ar 0Aq 0Aq 6Ta℞18Pi23Cp
24 3Cp 0Ta 5Cp11Sg24Ar 1Aq 0Aq 6Ta℞18Pi23Cp
25 4Cp12Ta 7Cp12Sg24Ar 1Aq 0Aq 6Ta℞18Pi23Cp
26 5Cp24Ta 8Cp13Sg25Ar 1Aq 1Aq 6Ta℞18Pi24Cp
27 6Cp 6Ge10Cp14Sg25Ar 1Aq 1Aq 6Ta℞18Pi24Cp
28 7Cp18Ge12Cp16Sg25Ar 1Aq 1Aq 6Ta℞18Pi24Cp
29 8Cp 0Cn13Cp17Sg26Ar 2Aq 1Aq 6Ta℞18Pi24Cp
30 9Cp13Cn15Cp18Sg26Ar 2Aq 1Aq 6Ta℞18Pi24Cp
3110Cp26Cn16Cp19Sg27Ar 2Aq 1Aq 6Ta℞18Pi24Cp

Reading the table

  • Format: degree + sign abbreviation. 15Le = 15° Leo.
  • ℞ = retrograde — the planet appears to move backwards through the zodiac that day.
  • highlighted = station day, the moment a planet stops and reverses direction (or vice versa). The most-watched single days in any month.

Common questions

About the ephemeris

What is an ephemeris?

A table of planetary positions over time. The classical paper ephemeris (Raphael's, Rosicrucian, Swiss Ephemeris) lists each planet's longitude on each day of the year — the working tool astrologers use to plan elections, time transits, and check past or future configurations. This page reproduces that data live from arcsecond-grade ephemerides.

Why noon UT?

The classical convention. The slow planets (Jupiter through Pluto) barely move in 12 hours, so noon-sampling captures their position for the whole day with negligible error. The Moon moves ~6.5° in 12 hours (about a quarter of a sign), so the Moon column is most accurate at noon UT specifically — for an exact Moon position at any moment in your local time, use the Sky Map tool.

How do I read each cell?

Each cell shows the planet's degree-in-sign and the sign abbreviation. "15Le" = 15° Leo. The ℞ marker means retrograde — the planet appears to move backwards through the zodiac on that day. Sign-changes (ingresses) appear as a transition between two adjacent cells; the exact ingress moment is in our Sky Now or Lunar Calendar pages.

Why are some cells highlighted?

We highlight the day each planet first appears retrograde or first turns direct in the displayed month — the stations. These are the most-watched days in any month: a planet's station is when it's stopped relative to the stars, and astrologers read the station as a focused activation of the planet's themes for the week or two surrounding it.

How accurate is this?

Arcsecond. We use VSOP87D for the planets and a truncated ELP2000 lunar model with deltaT correction. Same engine that computes the free Birth Chart, Sky Map, and Transit Forecast. Time-zone is UT (universal time); convert to your local time-zone if you need a same-day local read.

Can I use this to plan elections?

Yes — the daily ephemeris is the working table for Hellenistic and modern Western election work. Pair with the Muhurta tool (Vedic auspicious-time scoring), the Choghadiya page (Vedic time windows), and the Lunar Calendar (Moon phases + sign-ingresses) for a full election workflow.

Computation

Each cell is a live engine call cached for 24 hours: VSOP87D for Mercury–Neptune, an in-house DOPRI8 8(7) integrator for Pluto, and a truncated ELP2000 lunar model with deltaT correction for the Moon. Sub-arcsecond accurate. Sampled at 12:00 UT. Retrograde flags come from the engine’s direction-of-motion check, not a calendar approximation; station days are detected from adjacent-day flag flips.