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Astrology · Reference · Ephemeris

Daily ephemeris — May 2012

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
111Ta 7Vi17Ar20Ge 5Vi20Ta24Li℞ 6Ar 2Pi 9Cp℞
212Ta21Vi19Ar20Ge 5Vi20Ta24Li℞ 6Ar 2Pi 9Cp℞
313Ta 6Li20Ar21Ge 5Vi20Ta24Li℞ 6Ar 2Pi 9Cp℞
414Ta20Li22Ar21Ge 6Vi21Ta24Li℞ 6Ar 2Pi 9Cp℞
515Ta 6Sc23Ar22Ge 6Vi21Ta24Li℞ 6Ar 2Pi 9Cp℞
616Ta21Sc25Ar22Ge 6Vi21Ta24Li℞ 6Ar 2Pi 9Cp℞
717Ta 6Sg27Ar22Ge 6Vi21Ta24Li℞ 6Ar 2Pi 9Cp℞
818Ta21Sg28Ar23Ge 6Vi21Ta24Li℞ 6Ar 2Pi 9Cp℞
919Ta 6Cp 0Ta23Ge 7Vi22Ta24Li℞ 6Ar 2Pi 9Cp℞
1020Ta20Cp 2Ta23Ge 7Vi22Ta24Li℞ 6Ar 2Pi 9Cp℞
1121Ta 3Aq 4Ta23Ge 7Vi22Ta24Li℞ 7Ar 2Pi 9Cp℞
1222Ta17Aq 5Ta23Ge 8Vi22Ta24Li℞ 7Ar 3Pi 9Cp℞
1323Ta 0Pi 7Ta23Ge 8Vi23Ta24Li℞ 7Ar 3Pi 9Cp℞
1424Ta12Pi 9Ta23Ge 8Vi23Ta24Li℞ 7Ar 3Pi 9Cp℞
1525Ta25Pi11Ta23Ge 8Vi23Ta24Li℞ 7Ar 3Pi 9Cp℞
1626Ta 7Ar13Ta23Ge℞ 9Vi23Ta23Li℞ 7Ar 3Pi 9Cp℞
1726Ta19Ar15Ta23Ge℞ 9Vi24Ta23Li℞ 7Ar 3Pi 9Cp℞
1827Ta 0Ta17Ta23Ge℞ 9Vi24Ta23Li℞ 7Ar 3Pi 9Cp℞
1928Ta12Ta19Ta23Ge℞10Vi24Ta23Li℞ 7Ar 3Pi 9Cp℞
2029Ta24Ta21Ta23Ge℞10Vi24Ta23Li℞ 7Ar 3Pi 9Cp℞
21 0Ge 6Ge23Ta23Ge℞10Vi25Ta23Li℞ 7Ar 3Pi 9Cp℞
22 1Ge18Ge25Ta23Ge℞11Vi25Ta23Li℞ 7Ar 3Pi 9Cp℞
23 2Ge 0Cn27Ta22Ge℞11Vi25Ta23Li℞ 7Ar 3Pi 9Cp℞
24 3Ge12Cn 0Ge22Ge℞11Vi25Ta23Li℞ 7Ar 3Pi 9Cp℞
25 4Ge24Cn 2Ge22Ge℞12Vi26Ta23Li℞ 7Ar 3Pi 9Cp℞
26 5Ge 7Le 4Ge21Ge℞12Vi26Ta23Li℞ 7Ar 3Pi 9Cp℞
27 6Ge20Le 6Ge21Ge℞12Vi26Ta23Li℞ 7Ar 3Pi 9Cp℞
28 7Ge 3Vi 8Ge20Ge℞13Vi26Ta23Li℞ 7Ar 3Pi 9Cp℞
29 8Ge16Vi11Ge20Ge℞13Vi26Ta23Li℞ 7Ar 3Pi 8Cp℞
30 9Ge 0Li13Ge19Ge℞14Vi27Ta23Li℞ 7Ar 3Pi 8Cp℞
3110Ge15Li15Ge19Ge℞14Vi27Ta23Li℞ 7Ar 3Pi 8Cp℞

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.