January birthdays

January 21 zodiac sign

By Maren Tremblay, Fatesight editor · Last updated October 30, 2026

January 21 is Aquarius: at noon UTC on this date from 1950 to 2010, the Sun stood between 0°23' Aquarius and 1°34' Aquarius, in the first decan, with the constellation Capricornus behind it.

The years the Sun changed sign on January 21

The Sun moved from one sign to the next on this date in 4 of the 61 years. If you were born on one of these days, your birth time decides your sign: 1952 at 02:38 UTC, into Aquarius, 1956 at 01:48 UTC, into Aquarius, 1960 at 01:10 UTC, into Aquarius and 1964 at 00:41 UTC, into Aquarius.

What the first decan of Aquarius is read as

The first decan of Aquarius is read as Aquarius twice over, Uranus and Saturn arguing it out. People here tend to hold firm opinions about how everything should work. In love they need a friend first, and at work they do best with a problem nobody has solved.

What the number 3 adds

Numerology reads a birthday that comes to 3 as the mark of a talker and a maker. It tends to mean an easy way with words, a need to express what you feel, and some trouble finishing what stopped being fun.

The sky on January 21, 1950 to 2010

Mercury: Capricorn in 36 and Aquarius in 25 of 61 years. Retrograde in 1950, 1956, 1957, 1963, 1969, 1970, 1976, 1983, 1989, 1996, 2002, 2003 and 2009. Mercury in Capricorn.

Venus: Aquarius in 19, Sagittarius in 15, Pisces in 15 and Capricorn in 12 of 61 years. Retrograde in 1950, 1958, 1966, 1974, 1982, 1990, 1998 and 2006. Venus in Aquarius.

Mars: Sagittarius in 8, Scorpio in 7, Capricorn in 7, Aquarius in 7, Aries in 6, Pisces in 6, Libra in 5, Taurus in 4, Gemini in 3, Leo in 3, Virgo in 3 and Cancer in 2 of 61 years. Retrograde in 1961, 1963, 1978, 1980, 1993, 1995, 2008 and 2010. Mars in Sagittarius.

New Moons: 1966, 1985 and 2004. Full Moons: 1989 and 2000. Lunar eclipses: 2000 (total).

The Chinese New Year moves between late January and mid-February. January 21 came before it in 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 and 2010, so those years take the animal of the year before.

Every year's sky on January 21

At noon UTC. R: retrograde.

Who you tend to match with

Aquarius: closest Gemini, Libra and Sagittarius; hardest Scorpio. All twelve.

How we calculate the sky

• January 20
• January 22
• January zodiac signs
• Aquarius
• Birth chart calculator