December birthdays: the zodiac sign for every date
December birthdays split between 2 signs: Sagittarius (1 to 21) and Capricorn (22 to 31). The table below gives the sign for each date, the part of the sign it falls in, and a flag on the cusp days where your birth time and year can change the answer.
December zodiac signs by date
| Date | Sign | Part of sign | Cusp |
|---|---|---|---|
| December 1 | Sagittarius | first part, Jupiter | |
| December 2 | Sagittarius | second part, Mars | |
| December 3 | Sagittarius | second part, Mars | |
| December 4 | Sagittarius | second part, Mars | |
| December 5 | Sagittarius | second part, Mars | |
| December 6 | Sagittarius | second part, Mars | |
| December 7 | Sagittarius | second part, Mars | |
| December 8 | Sagittarius | second part, Mars | |
| December 9 | Sagittarius | second part, Mars | |
| December 10 | Sagittarius | second part, Mars | |
| December 11 | Sagittarius | second part, Mars | |
| December 12 | Sagittarius | third part, Sun | |
| December 13 | Sagittarius | third part, Sun | |
| December 14 | Sagittarius | third part, Sun | |
| December 15 | Sagittarius | third part, Sun | |
| December 16 | Sagittarius | third part, Sun | |
| December 17 | Sagittarius | third part, Sun | |
| December 18 | Sagittarius | third part, Sun | |
| December 19 | Sagittarius | third part, Sun | |
| December 20 | Sagittarius | third part, Sun | Capricorn cusp |
| December 21 | Sagittarius | third part, Sun | Capricorn cusp |
| December 22 | Capricorn | first part, Saturn | Sagittarius cusp |
| December 23 | Capricorn | first part, Saturn | Sagittarius cusp |
| December 24 | Capricorn | first part, Saturn | |
| December 25 | Capricorn | first part, Saturn | |
| December 26 | Capricorn | first part, Saturn | |
| December 27 | Capricorn | first part, Saturn | |
| December 28 | Capricorn | first part, Saturn | |
| December 29 | Capricorn | first part, Saturn | |
| December 30 | Capricorn | first part, Saturn | |
| December 31 | Capricorn | first part, Saturn |
Dates use the tropical zodiac. "Part of sign" splits each sign into three parts of about ten days (decans), ruled by the sign itself and then the next two signs of the same element.
December 1 to 21: Sagittarius
Sagittarius is a fire sign ruled by Jupiter. People born on these dates tend to be optimistic, adventurous and generous, and can struggle with being tactless and impatient. Read the full Sagittarius profile or see this month's Sagittarius horoscope.
December 22 to 31: Capricorn
Capricorn is a earth sign ruled by Saturn. People born on these dates tend to be disciplined, responsible and ambitious, and can struggle with being pessimistic and rigid. Read the full Capricorn profile or see this month's Capricorn horoscope.
December cusp dates
The shaded rows above (December 20, December 21, December 22 and December 23) sit next to a change of sign. The Sun moves into the next sign at a slightly different hour each year, so on these days the sign you see in a table may not match your own chart. Your birth time and place settle it. A free birth chart shows where the Sun really was.
Common December birthday questions
What zodiac sign is December 21?
December 21 is Sagittarius. It falls in the third part of Sagittarius, ruled by Sun. It is also a cusp date with Capricorn, so if you were born near midnight or in a year when the Sun changed sign early or late, your birth chart can show Capricorn instead.
What zodiac sign is December 22?
December 22 is Capricorn. It falls in the first part of Capricorn, ruled by Saturn. It is also a cusp date with Sagittarius, so if you were born near midnight or in a year when the Sun changed sign early or late, your birth chart can show Sagittarius instead.