December 20 zodiac sign
Late in the Leo decan, December 20 holds the Sun at about 28° Sagittarius, one of the sign’s final degrees, where pride and the approach of Capricorn make the fire both warm and watchful.
Sun signSagittarius
- Sun at 27°–30° Sagittarius
- 3rd decan · Sun
- Near the cusp
December 20 in profile
Twenty-eight degrees is Sagittarius at its most seasoned, already sensing Capricorn’s cooler logic a step ahead. The third decan’s sub-ruler is the Sun through Leo, so dignity and self-respect run strong beside Jupiter’s easy optimism. This date is Sagittarius in almost every case, though anyone born far from Greenwich time may want to check a chart. A December 20 Sagittarius has learned that bluntness has consequences and chooses battles more carefully than earlier archers.
They argue on principle and rarely for sport. An unfair remark about a colleague or a broken promise brings out a firm, clear response, usually delivered with a raised eyebrow first. They prefer to settle a dispute that same evening. Pride makes the first apology difficult, so they often apologise with actions instead: a coffee, a lift, a favour. Holding a grudge costs them more energy than it is worth, and they know it.
Stress makes them plan. Where younger archers would bolt, a December 20 Sagittarius makes lists, books meetings and takes charge, sometimes of things that belong to others. Sleep suffers when a problem is unresolved. A firm cut-off in the evening helps, after which the plan waits on paper until morning and the mind is allowed to wander elsewhere.
Sagittarius near the cusp
In every year from 1930 to 2040 the Sun was in Sagittarius for the whole of December 20 in Greenwich time (UTC). The change of sign happens within a day of this date, though, so a birth in a time zone far from UTC (New Zealand, Hawaii or the Pacific) can fall in Capricorn. If that is you, the birth chart calculator settles it from your time and city.
Calculated by Lunonis from the same ephemeris code as our charts (astronomy-engine, checked against Swiss Ephemeris): geocentric, tropical zodiac, true equinox of date. Times are UTC: add or subtract your time zone’s offset, which can move the change to the day before or after.
Your Moon sign depends on the year
The Sun is in the same place on December 20 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 20 in recent years, from 00:00 to 23:59 UTC (an arrow means it changed sign during the day).
- 2017Capricorn
- 2018Taurus → Gemini
- 2019Libra
- 2020Pisces
- 2021Cancer
- 2022Scorpio
- 2023Aries
- 2024Leo → Virgo
- 2025Sagittarius → Capricorn
- 2026Taurus
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 20 birthday, in the Leo decan, Leo is a natural match. The full charts decide how a real pairing feels.
A gift for a December 20 birthday
A weekend workshop in pottery or woodwork, slow and tactile, which gives restless hands something to shape and a calm afternoon away from screens.
Asked about December 20
What zodiac sign is December 20?
December 20 is Sagittarius. In Greenwich time the Sun is in Sagittarius all day in every year from 1930 to 2040; only a birth in a time zone far from UTC can fall in Capricorn.
Is December 20 a cusp birthday?
Only just. December 20 is next to the day the Sun changes sign, so it is Sagittarius in UTC but can be Capricorn for births in far eastern or western time zones. There is no blend of the two: a chart with the birth time and city gives one sign.
What decan is December 20?
December 20 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 20 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.