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Astrology · Reference · Ephemeris

Daily ephemeris — September 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 9Vi13Cp29Le℞ 7Le27Le22Li21Sg28Ar℞12Pi℞17Cp℞
210Vi25Cp29Le℞ 8Le28Le22Li21Sg28Ar℞12Pi℞17Cp℞
311Vi 8Aq28Le℞ 9Le28Le22Li21Sg28Ar℞12Pi℞17Cp℞
412Vi20Aq28Le℞11Le29Le22Li21Sg28Ar℞12Pi℞16Cp℞
513Vi 3Pi28Le12Le 0Vi22Li21Sg28Ar℞12Pi℞16Cp℞
614Vi16Pi28Le13Le 0Vi23Li21Sg28Ar℞12Pi℞16Cp℞
715Vi29Pi28Le14Le 1Vi23Li21Sg28Ar℞12Pi℞16Cp℞
816Vi13Ar29Le15Le 1Vi23Li21Sg28Ar℞12Pi℞16Cp℞
916Vi27Ar29Le17Le 2Vi23Li21Sg27Ar℞12Pi℞16Cp℞
1017Vi11Ta 0Vi18Le 3Vi23Li21Sg27Ar℞12Pi℞16Cp℞
1118Vi25Ta 1Vi19Le 3Vi24Li21Sg27Ar℞12Pi℞16Cp℞
1219Vi 9Ge 1Vi20Le 4Vi24Li21Sg27Ar℞12Pi℞16Cp℞
1320Vi23Ge 3Vi22Le 5Vi24Li21Sg27Ar℞12Pi℞16Cp℞
1421Vi 8Cn 4Vi23Le 5Vi24Li21Sg27Ar℞12Pi℞16Cp℞
1522Vi22Cn 5Vi24Le 6Vi24Li21Sg27Ar℞12Pi℞16Cp℞
1623Vi 6Le 6Vi25Le 7Vi24Li21Sg27Ar℞12Pi℞16Cp℞
1724Vi20Le 8Vi26Le 7Vi25Li21Sg27Ar℞12Pi℞16Cp℞
1825Vi 4Vi 9Vi28Le 8Vi25Li21Sg27Ar℞12Pi℞16Cp℞
1926Vi17Vi11Vi29Le 8Vi25Li21Sg27Ar℞12Pi℞16Cp℞
2027Vi 1Li13Vi 0Vi 9Vi25Li21Sg27Ar℞12Pi℞16Cp℞
2128Vi14Li14Vi 1Vi10Vi26Li21Sg27Ar℞12Pi℞16Cp℞
2229Vi27Li16Vi 2Vi10Vi26Li21Sg27Ar℞12Pi℞16Cp℞
23 0Li 9Sc18Vi 4Vi11Vi26Li21Sg27Ar℞12Pi℞16Cp℞
24 1Li21Sc19Vi 5Vi12Vi26Li21Sg27Ar℞12Pi℞16Cp℞
25 2Li 4Sg21Vi 6Vi12Vi26Li21Sg27Ar℞12Pi℞16Cp℞
26 3Li15Sg23Vi 7Vi13Vi27Li22Sg27Ar℞12Pi℞16Cp℞
27 4Li27Sg25Vi 9Vi14Vi27Li22Sg27Ar℞12Pi℞16Cp℞
28 5Li 9Cp27Vi10Vi14Vi27Li22Sg27Ar℞12Pi℞16Cp℞
29 6Li21Cp29Vi11Vi15Vi27Li22Sg27Ar℞12Pi℞16Cp
30 7Li 3Aq 0Li12Vi15Vi27Li22Sg27Ar℞12Pi℞16Cp

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.