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Astrology · Reference · Ephemeris

Daily ephemeris — May 2013

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
111Ta28Cp29Ar19Ta 8Ta17Ge 7Sc℞10Ar 5Pi11Cp℞
212Ta12Aq 1Ta21Ta 8Ta17Ge 7Sc℞10Ar 5Pi11Cp℞
313Ta26Aq 3Ta22Ta 9Ta18Ge 7Sc℞10Ar 5Pi11Cp℞
414Ta 9Pi 5Ta23Ta10Ta18Ge 7Sc℞10Ar 5Pi11Cp℞
515Ta22Pi 7Ta24Ta11Ta18Ge 7Sc℞10Ar 5Pi11Cp℞
616Ta 5Ar 9Ta26Ta11Ta18Ge 7Sc℞10Ar 5Pi11Cp℞
717Ta18Ar11Ta27Ta12Ta18Ge 7Sc℞10Ar 5Pi11Cp℞
818Ta 0Ta14Ta28Ta13Ta19Ge 7Sc℞10Ar 5Pi11Cp℞
919Ta13Ta16Ta29Ta14Ta19Ge 7Sc℞10Ar 5Pi11Cp℞
1019Ta25Ta18Ta 1Ge14Ta19Ge 7Sc℞10Ar 5Pi11Cp℞
1120Ta 7Ge20Ta 2Ge15Ta19Ge 7Sc℞10Ar 5Pi11Cp℞
1221Ta19Ge22Ta 3Ge16Ta19Ge 7Sc℞10Ar 5Pi11Cp℞
1322Ta 1Cn24Ta 4Ge17Ta20Ge 7Sc℞10Ar 5Pi11Cp℞
1423Ta12Cn27Ta 5Ge17Ta20Ge 7Sc℞10Ar 5Pi11Cp℞
1524Ta24Cn29Ta 7Ge18Ta20Ge 6Sc℞11Ar 5Pi11Cp℞
1625Ta 6Le 1Ge 8Ge19Ta20Ge 6Sc℞11Ar 5Pi11Cp℞
1726Ta18Le 3Ge 9Ge19Ta21Ge 6Sc℞11Ar 5Pi11Cp℞
1827Ta 1Vi 5Ge10Ge20Ta21Ge 6Sc℞11Ar 5Pi11Cp℞
1928Ta14Vi 7Ge12Ge21Ta21Ge 6Sc℞11Ar 5Pi11Cp℞
2029Ta27Vi 9Ge13Ge22Ta21Ge 6Sc℞11Ar 5Pi11Cp℞
21 0Ge10Li11Ge14Ge22Ta21Ge 6Sc℞11Ar 5Pi11Cp℞
22 1Ge24Li13Ge15Ge23Ta22Ge 6Sc℞11Ar 5Pi11Cp℞
23 2Ge 9Sc15Ge17Ge24Ta22Ge 6Sc℞11Ar 5Pi11Cp℞
24 3Ge23Sc17Ge18Ge25Ta22Ge 6Sc℞11Ar 5Pi11Cp℞
25 4Ge 8Sg19Ge19Ge25Ta22Ge 6Sc℞11Ar 5Pi11Cp℞
26 5Ge24Sg21Ge20Ge26Ta23Ge 6Sc℞11Ar 5Pi11Cp℞
27 6Ge 9Cp23Ge21Ge27Ta23Ge 6Sc℞11Ar 5Pi11Cp℞
28 7Ge24Cp25Ge23Ge27Ta23Ge 6Sc℞11Ar 5Pi11Cp℞
29 8Ge 8Aq27Ge24Ge28Ta23Ge 6Sc℞11Ar 5Pi11Cp℞
30 9Ge22Aq28Ge25Ge29Ta23Ge 5Sc℞11Ar 5Pi11Cp℞
3110Ge 6Pi 0Cn26Ge 0Ge24Ge 5Sc℞11Ar 5Pi11Cp℞

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.