Venus inside a Mars sign
Each sign divides into three parts of ten degrees, and each part carries a ruler drawn from a fixed planetary sequence. The closing band of Scorpio, from twenty to thirty degrees, falls to Venus in that sequence. The sign around it belongs to Mars in the older scheme and to Pluto in the modern one, so the band puts a planet of attachment inside a sign of pressure.
That pairing is unusual enough that the older texts comment on it. The reading handed down is Scorpio directed at something specific rather than dispersed: the same refusal to let go, aimed at a person, a piece of work or a grievance instead of at everything equally. It is a convention preserved in writing, not a measurement, and it should be taken as such.
What it is not is a softening. Nothing in the scheme suggests that a Venus band makes a sign gentler, only that it names what the sign's persistence is pointed at.
Where the Sun actually stands
Taken at noon in every year from 1930 to 2035, the Sun on 13 November has stood between about twenty and twenty one and a half degrees of Scorpio. The lower end of that spread clears the band boundary at twenty degrees, so the answer does not alternate the way it does a day earlier.
The spread stays this narrow because the calendar is designed to hold the date against the orbit. Three common years let the date slide forward relative to the Sun's progress, and the February leap day pulls it back, so the figure oscillates in a small sawtooth instead of wandering.
Within a single year the hour makes almost no difference. The Sun covers roughly one degree in a day, so a birth just after midnight and one just before the next differ by a fraction, far too little to move either the sign or the band.
Why the number is the useful part
Charts are read in degrees. Two placements count as aspected when the arc between them lands near an exact fraction of the circle, and how near is measured in degrees rather than in whole signs. A Sun around twenty one degrees of Scorpio opposes anything near the same degree of Taurus and squares anything near it in Leo or Aquarius.
A sign name alone cannot show you that. It brackets a placement into a thirty degree stretch, which is wide enough to hide the difference between a tight aspect and none at all. Anyone comparing two charts, or looking at where a slow moving planet currently sits, needs the figure rather than the label.
What a birthday cannot reach
The Sun is a single body, and it is the one that a calendar date happens to fix. Everything else in a chart needs more information. The Moon crosses about half a sign each day, so on this date it may be in either of two signs depending on the hour of birth. The rising sign turns through all twelve in a day and shifts with latitude, so a birth in Edinburgh and one in Lagos at the same clock time give different answers.
The widget above takes a year, a time and a place, returns the exact solar degree rather than the century-wide window, and reports how far the birth fell from the nearest sign boundary. On this date that distance is generous, which is worth confirming once and then leaving alone.
The other planets are equally out of reach. Mercury and Venus stay near the Sun and so can be narrowed a little from a date, but Mars and everything beyond it need a year at minimum, and a real position needs a calculation rather than an inference.
Questions people ask about this
Which decan is 13 November?
The third decan of Scorpio, the band from twenty to thirty degrees, in every year since 1930. The Chaldean order assigns that band to Venus.
Is 13 November always Scorpio?
Yes. The Sun sits around two thirds of the way through the sign, several days clear of both boundaries, so no year or birth hour moves it.
What degree is the Sun on this date?
Between about twenty and twenty one and a half degrees of Scorpio at noon across the last century. Your own year and hour narrow that to one figure, which the widget above computes.
Does a Venus band make Scorpio softer?
The tradition does not say so. It reads the band as Scorpio aimed at something particular rather than as Scorpio diluted. That is an inherited convention rather than a finding.
Why do other sites give a different decan ruler?
Because a second scheme exists. The triplicity method assigns each decan to a sign of the same element, which for this band gives Cancer and so the Moon. Both are in use.
Do I need a birth time for this page's answer?
Not for the sign or the band, since neither can move within a day. For the Moon, the rising sign and the houses, yes, and the rising sign needs a birthplace as well.