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Astrology · Reference · Ephemeris

Daily ephemeris — May 1991

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
110Ta10Sg18Ar21Ge15Cn 5Le 6Aq13Cp℞16Cp℞19Sc℞
211Ta22Sg18Ar22Ge16Cn 5Le 6Aq13Cp℞16Cp℞19Sc℞
312Ta 3Cp19Ar23Ge16Cn 5Le 6Aq13Cp℞16Cp℞19Sc℞
413Ta15Cp19Ar24Ge17Cn 5Le 6Aq13Cp℞16Cp℞19Sc℞
514Ta27Cp19Ar25Ge17Cn 5Le 6Aq13Cp℞16Cp℞19Sc℞
615Ta 9Aq20Ar27Ge18Cn 5Le 6Aq13Cp℞16Cp℞19Sc℞
716Ta21Aq21Ar28Ge19Cn 5Le 6Aq13Cp℞16Cp℞19Sc℞
817Ta 4Pi21Ar29Ge19Cn 5Le 6Aq13Cp℞16Cp℞19Sc℞
918Ta16Pi22Ar 0Cn20Cn 5Le 6Aq13Cp℞16Cp℞18Sc℞
1019Ta 0Ar23Ar 1Cn20Cn 6Le 6Aq13Cp℞16Cp℞18Sc℞
1120Ta13Ar24Ar 2Cn21Cn 6Le 6Aq13Cp℞16Cp℞18Sc℞
1221Ta28Ar25Ar 3Cn21Cn 6Le 6Aq13Cp℞16Cp℞18Sc℞
1322Ta12Ta26Ar 4Cn22Cn 6Le 6Aq13Cp℞16Cp℞18Sc℞
1423Ta27Ta27Ar 6Cn23Cn 6Le 6Aq13Cp℞16Cp℞18Sc℞
1524Ta12Ge28Ar 7Cn23Cn 6Le 6Aq13Cp℞16Cp℞18Sc℞
1625Ta27Ge29Ar 8Cn24Cn 6Le 6Aq13Cp℞16Cp℞18Sc℞
1726Ta12Cn 0Ta 9Cn24Cn 6Le 6Aq℞13Cp℞16Cp℞18Sc℞
1827Ta26Cn 1Ta10Cn25Cn 7Le 6Aq℞13Cp℞16Cp℞18Sc℞
1928Ta10Le 3Ta11Cn25Cn 7Le 6Aq℞13Cp℞16Cp℞18Sc℞
2028Ta24Le 4Ta12Cn26Cn 7Le 6Aq℞13Cp℞16Cp℞18Sc℞
2129Ta 8Vi 5Ta13Cn27Cn 7Le 6Aq℞13Cp℞16Cp℞18Sc℞
22 0Ge21Vi 7Ta14Cn27Cn 7Le 6Aq℞13Cp℞16Cp℞18Sc℞
23 1Ge 4Li 8Ta15Cn28Cn 7Le 6Aq℞13Cp℞16Cp℞18Sc℞
24 2Ge17Li10Ta16Cn28Cn 7Le 6Aq℞13Cp℞16Cp℞18Sc℞
25 3Ge 0Sc11Ta18Cn29Cn 8Le 6Aq℞13Cp℞16Cp℞18Sc℞
26 4Ge12Sc13Ta19Cn29Cn 8Le 6Aq℞13Cp℞16Cp℞18Sc℞
27 5Ge24Sc14Ta20Cn 0Le 8Le 6Aq℞13Cp℞16Cp℞18Sc℞
28 6Ge 6Sg16Ta21Cn 1Le 8Le 6Aq℞13Cp℞16Cp℞18Sc℞
29 7Ge18Sg18Ta22Cn 1Le 8Le 6Aq℞13Cp℞16Cp℞18Sc℞
30 8Ge 0Cp19Ta23Cn 2Le 8Le 6Aq℞13Cp℞16Cp℞18Sc℞
31 9Ge12Cp21Ta24Cn 2Le 8Le 6Aq℞13Cp℞16Cp℞18Sc℞

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.