Last updated: April 26, 2026
What is the Venus synodic cycle?
The Venus synodic cycle is the 584-day rhythm between successive identical Sun-Venus alignments observed from Earth. Five of these cycles fit almost exactly into eight Earth years, which is why Venus traces a five-pointed star, the pentagram of Venus, across the zodiac over an 8-year arc. The pattern is not symbolic. It is a real orbital signature visible in the geocentric ephemeris.
The 8-year cycle and the pentagram
Thirteen Venus orbits (13 x 224.8 days) very nearly equal eight Earth years (2920 days vs 2922 days). Every 8 years Venus and the Sun meet at almost the same zodiacal degree, drifting backward by roughly 2 to 3 degrees per cycle. Across decades the pentagram slowly rotates through the zodiac, which is why the active star points shift between signs across generations.
Inferior vs superior conjunction
An inferior conjunction occurs when Venus passes between Earth and the Sun, with Venus retrograde at the moment of meeting. A superior conjunction occurs when Venus passes on the far side of the Sun, with Venus moving direct. The synodic cycle alternates between the two: inferior then superior then inferior again. Each inferior conjunction also delivers a Venus cazimi when geocentric latitude permits. See the Venus cazimi page for cazimi-specific dates.
Phases of the Venus synodic cycle
The synodic cycle subdivides into eight named phases: New Venus (inferior conjunction), Morning Star Emerging, Morning Star Brilliant (greatest western elongation), Morning Star Descending, Full Venus (superior conjunction), Evening Star Emerging, Evening Star Brilliant (greatest eastern elongation), and Evening Star Descending. Each phase carries a distinct interpretive flavour. The Venus phase calculator classifies your natal phase and the current sky.
Venus synodic returns across a lifetime
Same-star-point returns occur every ~8 years on or near your birthday: roughly ages 8, 16, 24, 32, 40, 48, 56, 64, and 72. The 5th return at ~age 40 is treated as a midlife Venus reckoning because it completes one full pentagram and reactivates the same star point you were born under. The synodic return calculator lists every return with date and age.
Sources and methodology
Sun-Venus conjunctions and Venus motion are computed with NASA's ANISE library against the JPL DE441 planetary ephemeris. Each conjunction is classified as inferior or superior by checking Venus's apparent direction (retrograde or direct) at the moment of conjunction. The pentagram drift, the 13:8 commensurability, and the Mayan Dresden Codex Venus tables all derive from this same orbital signature.
More Free Tools
Venus Star Point Calculator
Find your Venus Star Point in seconds. Returns your VSP sign, degree, and meaning, plotted live on the 8-year Venus pentagram.
Venus Synodic Return Calculator
Calculate your Venus synodic returns from birth through age 80. Free tool shows dates and ages for your 1st through 8th Venus synodic return.
Venus Phase Calculator
Find which of the eight phases of the Venus synodic cycle you were born in: New Venus, Morning Star, Full Venus, or Evening Star.
Frequently Asked Questions
What is the Venus synodic cycle?
The Venus synodic cycle is the 584-day rhythm between two identical Sun-Venus alignments observed from Earth. Five of these cycles fit almost exactly into eight Earth years, tracing a five-pointed star (the pentagram of Venus) across the zodiac. Each cycle moves through morning star, superior conjunction, evening star, and inferior conjunction phases.
Why is the Venus cycle 8 years long?
Thirteen Venus orbits (13 x 224.8 days) very nearly equal eight Earth years. As a result, every 8 years Venus and the Sun meet again at almost the same zodiacal degree, drifting backward by roughly 2 to 3 degrees per cycle.
What is the Rose of Venus or Pentagram of Venus?
The geocentric pattern Venus traces across the zodiac over 8 years. The five Sun-Venus conjunctions form the five points of a pentagram. The figure is sometimes called the Rose of Venus because the petals of the path resemble a five-petal rose.
How do I find my Venus star point?
Your Venus Star Point is the zodiac degree of the Sun-Venus conjunction immediately preceding your birth. The calculator on this page identifies it from your birth date.
What is the difference between a Venus return and a Venus synodic return?
A Venus return is when transiting Venus returns to its natal zodiac position (annual). A Venus synodic return is when the Sun-Venus conjunction returns to the same star point as your birth conjunction (every ~8 years).
When is the next Venus inferior conjunction?
The calculator computes upcoming Sun-Venus inferior conjunctions live from the JPL DE441 ephemeris. The next one is shown in the calendar view.
Is the Pentagram of Venus the same as the Egyptian or sacred geometry pentagram?
Geometrically yes (a regular five-pointed star), symbolically convergent. Many traditions reference the same pattern. The Venus version is grounded in real orbital mechanics rather than abstract sacred geometry.
See where you are in your story right now
The synodic cycle is one of many rhythms. Replay maps your life chapters month by month with profections, time lord periods, and major transit windows.