The last third of the sign
Libra's three ten degree bands divide at ten and twenty degrees. This date sits just past the second cut in every year of the range, so the closing band applies without the year dependence that affects a birthday a day or two before it. The Chaldean order gives that band to Jupiter, beneath Venus as ruler of the sign in full.
The sign itself is not close to anything. Scorpio begins at two hundred and ten degrees of longitude, which the Sun does not reach until around the twenty third of the month, so this birthday has more than a week of margin and no year or birthplace can change the answer.
What tradition reads into Venus with Jupiter
Venus is described as the principle of relation and proportion, Jupiter as the principle of extension and meaning. Over the closing third of Libra the tradition puts the two together as the stretch where the sign's interest in others opens outward, towards principle and the wider view, rather than tightening into the standard the middle band is associated with.
That is an interpretation attached to a band of longitude by a very old scheme. It is offered here as what the tradition says, not as something demonstrated. What is checkable is the position, and the position is what decides which part of the scheme applies to you.
How reliably the date fixes the position
Across more than a century the noon figure on this date varies by about one and a third degrees. The reason is the leap year cycle: three common years leave the Sun about a quarter of a day behind each time on a fixed date, and February's extra day returns the accumulated lag in one step, so the position circles a short arc.
Because the whole of that arc sits above twenty degrees, the decan is settled here rather than year dependent. The value of the number is practical as well: aspects are exact angles with a small allowance, and house placement is calculated from the longitude, so both need the degree rather than the sign name.
Where the calendar runs out
The Moon moves roughly thirteen degrees a day and changes sign every couple of days, so this date leaves it with two possibilities and occasionally three, decided by the hour. The rising sign is untouched by the date entirely, since all twelve signs pass over the eastern horizon in a rotation and only the hour and the latitude of the birthplace pick out one.
The ascendant then fixes which house every planet falls in, so two people who share this birthday can have the same Sun and almost nothing else in common. The widget above works from the year, the hour and the birthplace, gives the exact degree and reports how far the Sun stood from the nearest sign boundary. On this date that figure is a comfortable one, so the value of running it lies in the degree and the decan rather than in resolving any doubt about the sign. For a birthday a fortnight later the same report would be doing the harder job of deciding between two signs.
Questions people ask about this
Which decan is 14 October?
The third decan of Libra, running from twenty to thirty degrees. The Sun sits near twenty one degrees at noon in every year from 1930 to 2035, so the band holds without depending on the year.
Who rules the closing decan of Libra?
Jupiter, in the Chaldean order, sitting beneath Venus as the ruler of the sign as a whole. Traditional readings apply the two together rather than treating the decan ruler as a replacement.
Is this date ever Scorpio?
No. Scorpio begins around the twenty third of the month, so this birthday has more than a week of solar motion in hand and cannot be shifted by the year, the hour or the birthplace.
How is the third decan read differently from the second?
Tradition describes the middle band under Saturn as the more exacting stretch of Libra and the closing band under Jupiter as the more expansive one. Both are interpretations laid over ten degree divisions of longitude.
Does the date settle my Moon sign?
No. The Moon changes sign every couple of days, so the calendar leaves two possibilities and sometimes three. The hour of birth is needed to choose between them.
What is the exact degree for my birth?
It depends on the year, the hour and the birthplace, and lands somewhere near twenty one degrees of Libra. The widget above calculates the figure and the distance to the nearest boundary.