5 & 8 are Venus' numbers because of the manner in which she draws a Grand Quintile against the zodiac over a period of eight years. So how, exactly does she manage to do that?
2. Evening and Morning Star
When Venus is on the left side of
the diagram between positions 3
and 5, she appears as an evening
star.
When it is on the right side
between positions 6 and 2, she is
a morning star.
Positions 4 and 7 mark the
furthest Venus will get from the
Sun as observed from Earth
Between positions 5 and 6 on the
near side of her orbit, or 2 and 3
on the far side, she is too near the
sun to be seen.
3. Visibility as an evening or
morning star each average
about 263 days
Crossing the sun's face
(conjunct) takes about 8
days
Passing behind the sun
(opposition) takes about 50
days
Or 584 days (1.6 years) for
one synodic cycle
4. The Grand Quintile
Easiest if we select either
Venus' eastward (#4) or
westward (#7) elongation
from the Sun.
Plot this point against the
zodiac over five consecutive
synodic periods
Each sighting will be 215尊
from the previous one
Taking approximately eight
(5 x 1.6) years to complete
the pentagram.
5. Giving Wiccans two of
their sacred numbers
5 for the Lady
8 for the cycle of the
seasons
Two amusing factoids:
If you set your origin point
at the top of the
pentagram, she'll draw an
invoking Earth pentagram
against the sky
216尊 is roughly 7 zodiac
signs (In fairness, the 3/7 pair
come from the directions, not
Venus)
6. Giving Wiccans two of
their sacred numbers
5 for the Lady
8 for the cycle of the
seasons
Two amusing factoids:
If you set your origin point
at the top of the
pentagram, she'll draw an
invoking Earth pentagram
against the sky
216尊 is roughly 7 zodiac
signs (In fairness, the 3/7 pair
come from the directions, not
Venus)
Editor's Notes
The earth is shown at the bottom of the illustration, and for our purposes, consider it to be at rest. So let's look at Venus at different places in the orbit. She is orbiting around the sun counterclockwise in this illustration, and the earth is rotating on its axis in that same direction, causing night and day. See also John Pratt's The Feathered Serpent for the symbolism of points 1 through 7 in Quetzalcoatl's life story.
Venus must orbit the sun 2.6 times while Earth orbits 1.6 times before the two planets will align again. This period (583.92 Earth days) is called the Earth-Venus synodic cycle (synod means "place of meeting").
If you take a sighting point against the zodiac, and another each 584 days, Venus will be about 215.6属 further around the circle each time, thus describing a pentagram and not a pentagon, against the zodiac over the 8 years it takes her to make 6 such alignments to close the pentagram (a Grand Quintile since it moves 5 times to come back to its point of origin). It's not quite perfect in that the sixth alignment, beginning the next synodic series, occurs slightly west of the 1st point (2-3尊) because a full synodic series takes 7.997 rather than an even 8 years.