December 3 birthday
December 3: Sagittarius, in every year it has been checked.
Anyone born on December 3 has a Sagittarius Sun. Across every one of the 106 years between 1930 and 2035, the Sun was in Sagittarius for the whole of this calendar day — it never crossed a sign boundary on December 3 in that period, so the year and the birth time do not change the answer. The Sun sits in the second decan of Sagittarius, ruled traditionally by Moon.
106 years of December 3.
Each cell is one year, coloured by the sign the Sun occupied at noon UTC. There is nothing to see here, and that is the finding — this date has not changed sign once in 106 years.
- Sagittarius
- 106 years · 100%
The Moon on this date
12 of twelve signs, across 106 years.
The Moon covers the whole zodiac in about 27.3 days, so a calendar date tells you almost nothing about it. This is that fact as a measurement rather than as a claim.
Written byEmily ParkerAstrology & Tarot Writer
Editorial review byMyMysticDay Editorial TeamEditorial standards reviewer
What the sky actually did on December 3
Between 1930 and 2035 the Sun was in Sagittarius for the entire December 3 in every single year. This date sits comfortably inside the sign rather than near its edge, so no birth time, year, or time zone moves it.
On December 3 2035 the Sun began the day at 10°38' Sagittarius and ended it at 11°39' Sagittarius, covering 1.014° of ecliptic longitude. That figure is not constant either: the Earth's orbit is an ellipse, so the Sun's apparent daily motion ranges from roughly 0.953° near aphelion to 1.019° near perihelion.
- Census range: 1930–2035
- Years counted: 106
- Positions: apparent geocentric longitude, tropical zodiac
Where December 3 sits inside the sign
A sign is thirty degrees wide and traditionally divides into three ten-degree decans. December 3 falls in the second decan, 10°–20°, which the Chaldean sequence assigns to Moon.
Decan rulership is a traditional interpretive convention, not a second sign. It is named here because it is derived from the same calculated degree as everything else on this page — and because the systems disagree: the triplicity method assigns a different ruler to this decan than the Chaldean order does. MyMysticDay states which convention it used instead of presenting one as the answer.
The part of the chart a birthday cannot tell you
The Moon covers the full zodiac in about 27.3 days, so it lands somewhere different on December 3 almost every year. Across the 106 years in this census it fell in 12 of the twelve signs on this date — which is the arithmetic reason no birthday page can tell you your Moon sign, including this one.
That matters more than it sounds. The Moon describes emotional regulation, needs, and instinct — the half of a chart most people recognise first. A date gives it away only to within twelve possibilities; a birth time and place give it exactly.
What a Sagittarius Sun is taken to mean
With the arithmetic settled, the symbolism can start. Sagittarius is The explorer: the traditional motive is to pursue meaning through experience, candor, learning, and a wider horizon. At its most constructive that reads as perspective, optimism, humor, and courage to venture beyond the known; under pressure it can become promising beyond available capacity or using the big picture to skip a necessary detail.
A Sun sign describes the Sun's position and nothing else. It is one of roughly forty factors in a chart, and it is not a personality, a forecast, or an explanation of anybody's behaviour. Read it as a lens to test against your own experience rather than as a description to live up to.
- perspective, optimism, humor, and courage to venture beyond the known
- frank, synthetic, future-facing, and energized by ideas with room to travel
- meaning and room to roam
Keep reading
The sign, and the rest of the chart.
Sagittarius in full, and the ten planetary functions the same sign can style.
The half a date cannot give you
One minute of birth time settles all three.
Sun, Moon and rising sign come out of the same calculation. On this date the Sun is settled, but the other two are not: both move too fast to be read off a calendar.
- Sagittarius Sun The same sign in every year counted
- Moon sign Landed in 12 of 12 signs on this date
- Rising sign Changes every 2 hours
- One minute of birth time Settles all three at once
