Why every page says the same thing
Sun sign writing scaled up in the twentieth century because it needed no calculation. A date is enough, so a newspaper could run a column for the whole readership without asking anyone for a birth time. That practical convenience, rather than any decision inside the tradition, is why the sun sign became the public face of astrology.
The consequence is a flat internet. Three hundred and sixty five dates map onto twelve descriptions, so any two dates a week apart get the same text with a different heading. Nothing is wrong in those pages. There is simply almost nothing in them.
The material a date can actually support
Start with the degree. At noon between 1930 and 2035 the Sun on 6 April has stood between roughly fifteen and three quarters and seventeen degrees of Aries. The window stays that narrow because the leap year cycle holds the calendar against the orbit, cancelling three years of forward drift with a single extra day.
That position places the date in the second of the sign's three ten degree bands, the one running from ten to twenty degrees. The Chaldean order hands that band to the Sun while Mars keeps the sign, so a description can be narrower than Aries without becoming invented.
A birth hour shifts the figure by up to half a degree either side of noon, which is enough to change the last digit and nowhere near enough to change the band. So the decan is settled by the date alone on this one.
How much a decan actually adds
Not everything, and it is worth being honest about that. The band assignment is a convention inherited from Hellenistic and Arabic sources, and rival schemes place different planets on the same ten degrees. Where two systems disagree, the assignment is clearly a convention rather than an observation.
What the decan does add is discrimination. It separates a birth in the last days of March from one in the middle of April, where the plain sign label treats them as identical. For anyone frustrated that their birthday page reads like everyone else's, that is the first layer where the pages stop matching.
Aries as a whole is cardinal fire, ruled by Mars, and read as quick to begin and impatient with the middle of a process. That much is standard. The band is where a date stops sharing its text with the month around it.
The questions worth asking instead
Which sign was the Moon in, given that it covers about half a sign in a day and frequently changes sign on this date. What was rising, given that the horizon turns through all twelve signs every twenty four hours and shifts about a degree every four minutes. Which house holds the Sun, which cannot be answered at all without a time and a place.
Those are the questions where two people born on 6 April get different answers. The widget above works them out from a year, an hour and a birthplace, along with the exact solar degree and how far the birth fell from the nearest sign boundary.
Questions people ask about this
Why do all pages about this birthday read alike?
Because they are built on the sign alone, and the sign covers a month of dates. Twelve descriptions are being spread across the whole calendar, so neighbouring dates end up with identical text.
Is 6 April definitely Aries?
Yes, with a fortnight of margin on either side. The Sun entered Aries at the equinox and does not reach Taurus until around the twentieth of April.
What is the solar degree on 6 April?
Close to sixteen degrees of Aries, inside a window of about a degree and a quarter across the last century. Leap years sit near the bottom of the window.
Does the decan make my page different from a fellow Aries?
It distinguishes you from Aries births in the other two thirds of the sign, which is most of them. It does not distinguish you from someone born within the same ten day stretch.
What actually differs between two people born on this date?
The Moon sign can differ, the rising sign can be any of the twelve, and every house cusp follows from the horizon. Only the Sun is nearly identical between them.
Is any of the decan material predictive?
No. It is a descriptive convention attached to a measured position. Nothing in it forecasts events, and the site treats it as inherited interpretation rather than fact.