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Astrology · Reference · Ephemeris

Daily ephemeris — December 2017

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 9Sg 9Ta29Sg 0Sg25Li11Sc27Sg24Ar℞11Pi17Cp
210Sg24Ta29Sg 1Sg25Li11Sc27Sg24Ar℞11Pi17Cp
311Sg 9Ge29Sg℞ 2Sg26Li11Sc28Sg24Ar℞11Pi17Cp
412Sg24Ge29Sg℞ 3Sg26Li11Sc28Sg24Ar℞11Pi17Cp
513Sg 9Cn28Sg℞ 5Sg27Li11Sc28Sg24Ar℞11Pi17Cp
614Sg24Cn28Sg℞ 6Sg28Li12Sc28Sg24Ar℞11Pi17Cp
715Sg 9Le27Sg℞ 7Sg28Li12Sc28Sg24Ar℞11Pi17Cp
816Sg23Le26Sg℞ 8Sg29Li12Sc28Sg24Ar℞11Pi18Cp
917Sg 7Vi25Sg℞10Sg 0Sc12Sc28Sg24Ar℞11Pi18Cp
1018Sg20Vi24Sg℞11Sg 0Sc12Sc28Sg24Ar℞11Pi18Cp
1119Sg 3Li23Sg℞12Sg 1Sc13Sc28Sg24Ar℞11Pi18Cp
1220Sg16Li22Sg℞13Sg 1Sc13Sc29Sg24Ar℞11Pi18Cp
1321Sg28Li20Sg℞15Sg 2Sc13Sc29Sg24Ar℞11Pi18Cp
1422Sg11Sc19Sg℞16Sg 3Sc13Sc29Sg24Ar℞11Pi18Cp
1523Sg23Sc17Sg℞17Sg 3Sc13Sc29Sg24Ar℞11Pi18Cp
1624Sg 5Sg16Sg℞19Sg 4Sc14Sc29Sg24Ar℞11Pi18Cp
1725Sg17Sg15Sg℞20Sg 5Sc14Sc29Sg24Ar℞11Pi18Cp
1826Sg29Sg14Sg℞21Sg 5Sc14Sc29Sg24Ar℞11Pi18Cp
1927Sg11Cp14Sg℞22Sg 6Sc14Sc29Sg24Ar℞11Pi18Cp
2028Sg22Cp13Sg℞24Sg 6Sc14Sc 0Cp24Ar℞11Pi18Cp
2129Sg 4Aq13Sg℞25Sg 7Sc15Sc 0Cp24Ar℞11Pi18Cp
22 0Cp16Aq13Sg℞26Sg 8Sc15Sc 0Cp24Ar℞11Pi18Cp
23 1Cp28Aq13Sg27Sg 8Sc15Sc 0Cp24Ar℞11Pi18Cp
24 2Cp10Pi13Sg29Sg 9Sc15Sc 0Cp24Ar℞11Pi18Cp
25 3Cp23Pi13Sg 0Cp10Sc15Sc 0Cp24Ar℞11Pi18Cp
26 4Cp 6Ar13Sg 1Cp10Sc15Sc 0Cp24Ar℞11Pi18Cp
27 5Cp19Ar14Sg 2Cp11Sc16Sc 0Cp24Ar℞11Pi18Cp
28 6Cp 3Ta15Sg 4Cp11Sc16Sc 0Cp24Ar℞11Pi18Cp
29 7Cp17Ta15Sg 5Cp12Sc16Sc 1Cp24Ar℞11Pi18Cp
30 8Cp 2Ge16Sg 6Cp13Sc16Sc 1Cp24Ar℞11Pi18Cp
31 9Cp17Ge17Sg 7Cp13Sc16Sc 1Cp24Ar℞11Pi18Cp

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.