Born on July 31
Sun in Leo.
Your Sun sign
Anyone born on July 31 has the Sun in Leo. A Leo Sun is learning to create from the heart and let itself be seen. The work of the sign is warmth that does not depend on applause to keep burning.
The decan
July 31 falls in the first decan of Leo — roughly 0° to 10° of the sign. The first decan is the sign at its most undiluted. Everything the sign is known for shows up here with the least interference — for better and for worse, this is the purest expression of it. Here that sub-ruler is Leo itself, ruled by the Sun: a double dose rather than a blend.
The Egyptian decan
Long before the Greeks divided the sky into twelve, Egyptian astronomers cut the year into thirty-six decans of about ten days, each marked by the star that rose with the dawn. July 31 belongs to Sesme, decan 21 of thirty-six, whose rising star is Kaus Australis and whose traditional quality is divine vengeance and healing. This is a separate tradition from the western zodiac above, not a translation of it — the two were built from different sky-watching and they disagree in places.
The deity for this date
The Egyptian deity paired with this date is Sekhmet (Sekhmet) — Fire element, sacred animal the Lioness. Fierce and magnificent, Sekhmet souls burn with an inner fire that can heal or destroy. They are warriors and healers in equal measure, channeling immense power with precision. When they love, they love completely; when wronged, their wrath is legendary and absolute.
The day number
As a date, July 31 reduces to a 4 — structure, patience, and the instinct to build something that will still be standing later. This is the day number rather than your full Life Path, which needs the month and year as well — but it is the part of the calculation your birthday alone decides.
What a birth date cannot tell you
One thing worth being clear about: a birth date on its own fixes your Sun sign and very little else. Your Moon sign changes every two and a half days, and your Rising sign changes roughly every two hours and depends on where you were born. Two people who share July 31 can have almost nothing else in common chart-wise.
Two people share this birthday and almost nothing else
Your Moon sign needs a time, your Rising sign needs a time and a place. Six questions, no card.
See my full chart →Born on July 31: FAQ
What zodiac sign is July 31?
July 31 is Leo. The Sun is comfortably inside Leo on this date in every year, so unlike the eleven cusp dates there is no ambiguity here.
Which decan is July 31?
July 31 falls in the first decan of Leo, the 0–10° band, sub-ruled by the Sun. Decans divide each sign into three ten-degree sections, which is how two people of the same sign can read quite differently.
Does my birthday tell you my Moon sign?
No. The Moon crosses a sign every two and a half days, so a date alone cannot fix it — you need at least the year, and usually the time. Zodaiya's Moon sign calculator will tell you honestly when your date is not enough to settle it.
What is special about being born on July 31?
Astrologically: the Sun's position, the decan it falls in, and the Egyptian deity Sekhmet traditionally paired with this part of the year. What it does not fix is the rest of your chart, which is where most of the personal detail actually lives.