January 21 Zodiac Sign

January 21 by year

Nearly every row reads Aquarius all day. The three rows that show a time are the only places Capricorn appears, and each is within about an hour of midnight.

Faster: enter your year above and you get your answer without the table.

Shown: 2021 to 2030. Born earlier? Tap Show all years under the table, then jump to your decade.

Times are clock times of that year in New York and Los Angeles, from the astronomy-engine ephemeris, rounded to the minute, with the daylight saving rules in force at the time. Central and Mountain time fall between the two columns.

Capricorn and Aquarius: the two signs of January 21

When things go wrong, the tradition sends these two neighbors in opposite directions. Capricorn is a cardinal earth sign ruled by Saturn, and the reading says it shoulders the problem, takes stock of what is left and starts rebuilding before anyone has finished complaining. It is described as steady and dry under strain, and as slow to ask for help.

Aquarius belongs to air and holds its position as a fixed sign. Saturn was its ruler in the classical scheme, and Uranus took over in the modern one. Under pressure the reading has it step back and take in the whole situation from outside, which in a crisis can look like coolness. Fixed signs are said to resist being hurried, so an Aquarius reaction is described as detached first and stubborn second, flexible only on its own schedule. The price named for Capricorn is carrying too much alone, and for Aquarius it is going missing emotionally just when someone needs a reply.

On this site: Moon in Capricorn, Moon in Aquarius, Venus in Capricorn, Venus in Aquarius, Mars in Capricorn, Mars in Aquarius, Mercury in Capricorn, Mercury in Aquarius.

Each sign in full: Capricorn zodiac sign · Aquarius zodiac sign; how the two get along: Capricorn and Aquarius compatibility.

The year ahead for both sides of January 21: Capricorn horoscope 2027 · Aquarius horoscope 2027.

How often Capricorn and Aquarius come up among birth dates from 1930 to 2025, and why websites name different signs for the same day: zodiac sign statistics. Where Capricorn stands among Taurus, Virgo and Capricorn: earth signs.Aquarius and the two other signs of its element: air signs.

Can a January 21 birthday be a Capricorn?

Almost never. The one way is to be born in the first hour of the day in a year like 1932, when the Sun made its entry at 1:06 a.m. Eastern, just past 1 a.m. Anyone born shortly after midnight that year was still a Capricorn.

Every other birth on this date between 1930 and 2025 was an Aquarius in all four U.S. zones we counted.

How often is January 21 not an Aquarius?

Eastern clocks show three such mornings, Mountain and Pacific clocks none. They fell in 1932, 1936 and 1944. The crossing came between 12:07 a.m. and 1:06 a.m., so the Capricorn stretch lasted an hour or less. Born in one of them, compare your birth time with the minute in the table. For any other birth year the date alone gives the sign.

When did January 21 become Aquarius all day?

From 1945 on. Every year since then reads Aquarius from midnight, and the three exceptions all came before it, each in a leap year.

The run is not about to end. Every entry through 2030 lands on the 19th or 20th, so none can reach back to the 21st. The 2026 one came on Jan 19, 2026, at 8:44 p.m.

Questions about the January 21 zodiac sign

Other cusp birthdays

Every date where the zodiac sign depends on the year or the hour, grouped by the change of sign:

• ♓︎ Pisces to ♈︎ Aries: March 19 · March 20 · March 21
• ♈︎ Aries to ♉︎ Taurus: April 19 · April 20
• ♉︎ Taurus to ♊︎ Gemini: May 20 · May 21
• ♊︎ Gemini to ♋︎ Cancer: June 20 · June 21 · June 22
• ♋︎ Cancer to ♌︎ Leo: July 22 · July 23
• ♌︎ Leo to ♍︎ Virgo: August 22 · August 23
• ♍︎ Virgo to ♎︎ Libra: September 22 · September 23
• ♎︎ Libra to ♏︎ Scorpio: October 22 · October 23 · October 24
• ♏︎ Scorpio to ♐︎ Sagittarius: November 21 · November 22 · November 23
• ♐︎ Sagittarius to ♑︎ Capricorn: December 21 · December 22
• ♑︎ Capricorn to ♒︎ Aquarius: January 19 · January 20 · January 21
• ♒︎ Aquarius to ♓︎ Pisces: February 18 · February 19

Written by The Zodiac Atlas editorial team with the help of AI and edited by a person. Every time and count on this page comes from our own run of the astronomy-engine ephemeris (tropical zodiac) over the years 1930 to 2030, with historical US time zone rules. Astrology is a symbolic tradition, not a science.