December 15 zodiac sign
December 15 sets the Sun at about 23° Sagittarius, in the Leo decan, a stretch of the sign where courage tends to come with an audience and a point of honour.
Sun signSagittarius
- Sun at 22°–25° Sagittarius
- 3rd decan · Sun
December 15 in profile
Later Sagittarius has collected enough experience to take bigger risks with better judgement. At 23° the Sun sits in the third decan, where Leo is the sub-sign and the Sun sub-rules, so pride joins Jupiter’s optimism. This is fire with a sense of dignity. The late degrees also lean towards Capricorn’s realism, which gives the boldness some structure. A December 15 Sagittarius tends to back a cause, a person or a plan with total commitment once convinced.
They take risks in the open. Quitting a job, standing for election, moving abroad on a three-week decision: they announce the plan first and work out details later. Fear is real but pride overrules it. Friends sometimes watch through their fingers, then admit the gamble paid off more often than it should have. The failures become favourite stories at parties.
In conflict they fight fair and loudly. A slight against their honour, or against someone they love, gets an immediate response. They hate being talked about rather than to. Once the air clears they are generous and seldom hold a grudge. Silent treatment from others feels worse to them than any shouting match. Letting the other side finish a full sentence is the harder skill, and it keeps more friends than winning does.
Sagittarius all day
In every year from 1930 to 2040 the Sun was in Sagittarius for the whole of December 15, in every time zone. This is not a cusp birthday: the nearest changes of sign fall around November 23 and December 21.
Your Moon sign depends on the year
The Sun is in the same place on December 15 every year; the Moon is not. It changes sign every two and a half days, so people who share this birthday can have any of the twelve Moon signs. Here is where it was on December 15 in recent years, from 00:00 to 23:59 UTC (an arrow means it changed sign during the day).
- 2017Scorpio
- 2018Pisces
- 2019Cancer → Leo
- 2020Sagittarius → Capricorn
- 2021Taurus
- 2022Virgo
- 2023Capricorn → Aquarius
- 2024Gemini → Cancer
- 2025Libra → Scorpio
- 2026Aquarius → Pisces
Compatible signs for a Sagittarius
Sun-sign compatibility starts from the element. Sagittarius gets on most easily with its own element and with the two sextile signs, and feels the strongest pull from its opposite. For a December 15 birthday, in the Leo decan, Leo is a natural match. The full charts decide how a real pairing feels.
A gift for a December 15 birthday
A voucher for a tandem skydive or a high-ropes course, framed with a handwritten card that names one brave thing they have already done this year.
Asked about December 15
What zodiac sign is December 15?
December 15 is Sagittarius in every year: the Sun is at about 22°–25° Sagittarius that day, in the sign’s 3rd decan.
Is December 15 a cusp birthday?
No. The Sun is well inside Sagittarius on December 15. The cusp days, when the Sun changes sign, fall around November 23 and December 21. Astrology has no blended cusp signs anyway: at any moment the Sun is in one sign.
What decan is December 15?
December 15 falls in the 3rd decan of Sagittarius. In the triplicity system we use, that decan belongs to Leo and its ruler Sun, which colours the Sagittarius Sun with a little of Leo.
Your birthday is only the Sun
A December 15 birthday tells you where the Sun was. The Moon, the Rising sign and eight more planets each sit somewhere of their own, and they depend on the year, the hour and the place. The free calculator shows all of them.