What the date settles
One placement, precisely. Between 1930 and 2035, noon on 25 February has put the Sun between about five point seven and seven point one degrees of Pisces, without a single exception and without approaching the boundary at either end.
That band is under a degree and a half wide across more than a century, because the leap year cycle keeps the calendar tied to the orbit. Common years nudge the position forward by a quarter of a degree each, a leap day pulls it back by close to a degree, and the result oscillates rather than drifts.
The band is also not centred on a round number. A birth in a year early in the leap cycle sits near the bottom of the range and one late in the cycle sits near the top, which is a real difference of more than a degree between two people who share a birthday.
What the date does not settle
The Moon covers roughly thirteen degrees a day and stays about two and a half days in a sign, so on any given 25 February it may pass from one sign to the next while the date is still running. Two people born on this date twelve hours apart can have different Moon signs.
The rising sign is looser again. The whole zodiac rotates past the eastern horizon in a day, so the Ascendant depends on the clock time and the latitude, not on the date at all. Every one of the twelve is possible for someone born on 25 February. Since the houses are built from the Ascendant, the entire layout of a chart hangs on information the birthday does not contain.
The decan, which almost nobody mentions
Six degrees of Pisces sits in the first decan, the opening ten degree band, ruled by Saturn in the Chaldean sequence. This is the layer that distinguishes one Pisces birthday from another, and it is missing from nearly every page written about a date.
The tradition reads a Saturn decan as the part of the sign that holds a shape: slower to give way, more willing to sit with something difficult, less inclined to drift. That is a reading rather than a measurement, and it is offered here as one.
The other thing a decan does is give two people with the same sun sign something genuinely different to compare. A birth in the middle of March carries a Pisces Sun in a band with a different ruler and a different traditional description, which the shared sign label conceals entirely.
Getting the exact figure
A range is not a position. Your own solar degree depends on your birth year, the hour and the longitude of your birthplace, and the difference between the low and high end of the range is real even if it is small.
The widget above computes it from your own details and also reports how far your Sun stood from the nearest sign boundary. On this date the answer will be comfortably far, which is itself useful to know, because it means no amount of missing birth time can change the sun sign.
If the hour is unknown, the standard practice is to calculate for noon and treat anything time sensitive as provisional. On this date that convention costs nothing for the Sun and everything for the Ascendant.
Questions people ask about this
What star sign is 25 February?
Pisces, always. The Sun entered Pisces several days earlier in every year on record, so this date has never fallen on the Aquarius side of the boundary.
What degree is the Sun on 25 February?
Roughly six degrees of Pisces. The noon range across 1930 to 2035 runs from about five point seven to seven point one degrees, and your exact figure depends on your year and birthplace.
Which Pisces decan is 25 February?
The first, covering zero to ten degrees, with Saturn as its ruler in the Chaldean order. A birthday in mid March falls in a different band with a different ruler.
Can my Moon sign be worked out from the date alone?
Not reliably. The Moon changes sign roughly every two and a half days, so on many years a 25 February birth is in one sign in the morning and another by night.
What rising sign goes with this birthday?
Any of the twelve. The Ascendant is set by the time of day and the latitude of birth, so the date on its own carries no information about it.
Is the sun sign the most important part of a chart?
It is the most widely known part, not the most individual one. Everyone born within about a month shares it, whereas the Ascendant changes every couple of hours.