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Astrology · Reference · Ephemeris

Daily ephemeris — May 2011

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
110Ta21Ar15Ar12Ar22Ar22Ar11Li℞ 2Ar 0Pi 7Cp℞
211Ta 3Ta16Ar13Ar23Ar22Ar11Li℞ 2Ar 0Pi 7Cp℞
312Ta15Ta16Ar14Ar24Ar22Ar11Li℞ 2Ar 0Pi 7Cp℞
413Ta27Ta17Ar16Ar24Ar23Ar11Li℞ 2Ar 0Pi 7Cp℞
514Ta 9Ge18Ar17Ar25Ar23Ar11Li℞ 2Ar 0Pi 7Cp℞
615Ta22Ge19Ar18Ar26Ar23Ar11Li℞ 2Ar 0Pi 7Cp℞
716Ta 5Cn20Ar19Ar27Ar23Ar11Li℞ 3Ar 0Pi 7Cp℞
817Ta18Cn21Ar20Ar27Ar24Ar11Li℞ 3Ar 0Pi 7Cp℞
918Ta 1Le22Ar22Ar28Ar24Ar11Li℞ 3Ar 0Pi 7Cp℞
1019Ta14Le23Ar23Ar29Ar24Ar11Li℞ 3Ar 0Pi 7Cp℞
1120Ta28Le24Ar24Ar 0Ta24Ar11Li℞ 3Ar 0Pi 7Cp℞
1221Ta13Vi25Ar25Ar 0Ta24Ar11Li℞ 3Ar 0Pi 7Cp℞
1322Ta27Vi26Ar27Ar 1Ta25Ar11Li℞ 3Ar 0Pi 7Cp℞
1423Ta12Li28Ar28Ar 2Ta25Ar11Li℞ 3Ar 0Pi 7Cp℞
1524Ta27Li29Ar29Ar 3Ta25Ar11Li℞ 3Ar 0Pi 7Cp℞
1625Ta12Sc 0Ta 0Ta 3Ta25Ar11Li℞ 3Ar 0Pi 7Cp℞
1726Ta26Sc 2Ta 1Ta 4Ta26Ar11Li℞ 3Ar 0Pi 7Cp℞
1827Ta11Sg 3Ta 3Ta 5Ta26Ar10Li℞ 3Ar 0Pi 7Cp℞
1928Ta25Sg 4Ta 4Ta 6Ta26Ar10Li℞ 3Ar 0Pi 7Cp℞
2029Ta 8Cp 6Ta 5Ta 6Ta26Ar10Li℞ 3Ar 0Pi 7Cp℞
21 0Ge22Cp 7Ta 6Ta 7Ta26Ar10Li℞ 3Ar 0Pi 7Cp℞
22 1Ge 5Aq 9Ta 7Ta 8Ta27Ar10Li℞ 3Ar 0Pi 7Cp℞
23 2Ge17Aq11Ta 9Ta 9Ta27Ar10Li℞ 3Ar 0Pi 7Cp℞
24 2Ge29Aq12Ta10Ta 9Ta27Ar10Li℞ 3Ar 0Pi 7Cp℞
25 3Ge11Pi14Ta11Ta10Ta27Ar10Li℞ 3Ar 0Pi 6Cp℞
26 4Ge23Pi16Ta12Ta11Ta28Ar10Li℞ 3Ar 0Pi 6Cp℞
27 5Ge 5Ar17Ta14Ta12Ta28Ar10Li℞ 3Ar 0Pi 6Cp℞
28 6Ge17Ar19Ta15Ta12Ta28Ar10Li℞ 3Ar 0Pi 6Cp℞
29 7Ge29Ar21Ta16Ta13Ta28Ar10Li℞ 3Ar 0Pi 6Cp℞
30 8Ge11Ta23Ta17Ta14Ta28Ar10Li℞ 3Ar 0Pi 6Cp℞
31 9Ge23Ta25Ta18Ta15Ta29Ar10Li℞ 3Ar 0Pi 6Cp℞

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.