Birthday signs · Aquarius season
What zodiac sign is January 21?
January 21 falls in Aquarius according to the tropical zodiac. Over the 101 years from 1930 through 2030, the Sun stood in Aquarius at noon UTC on January 21, at 0.25° to 1.74° Aquarius. Day 1 or 2 of Aquarius season is January 21, located in its early part and linked to the element air.
Calculated across 1930–2030 · checked .
January 21 is Aquarius
| Aquarius at noon UTC | 101 of 101 years, 1930–2030 |
|---|---|
| Nearest change of sign | at least 0 days away |
| Birth time needed for the sign | no |
January 21 at a glance
| Sign | ♒︎ Aquarius, the Water-bearer |
|---|---|
| Element and mode | air, fixed |
| Polarity | positive (masculine) |
| Ruler | Saturn (traditional); Uranus (modern, 20th-century assignment) |
| Sun on this date | 0.2° to 1.7° Aquarius at noon UTC, 1930–2030 |
| Day of the season | day 1 or 2 of Aquarius season |
| Decan | first (0°–10°), face of Venus |
| Sidereal sign (Lahiri) | Capricorn |
| Day number | 3 (modern numerology) |
Rulers: Ptolemy; modern list.6
The decan: early Aquarius
| Noon Sun | 0.25° to 1.74° Aquarius |
|---|---|
| Decan | first (0°–10°) |
| Face ruler, Chaldean order | Venus |
Faces after Lilly, in Chaldean order.3
January 21 by the numbers
| Day number | 3 (2 + 1 = 3) |
|---|---|
| Month-day number | 4 (1 + 3) |
| System | modern numerology, digit sums |
Digit sums as numerology guides give them.4
Where the date falls in the season
| Day of Aquarius season | 1 or 2 |
|---|---|
| Aquarius season opened | January 20 (48 years) or January 21 (53) |
| Aquarius season closed | February 17 (4 years) or February 18 (80) or February 19 (17) |
| Element and mode | air, fixed |
| Traditional ruler | Saturn |
Seasons by the noon-UTC rule; rulers after Ptolemy.2
Born at this point in Aquarius season
Born in the first days of Aquarius, around January 21, this person arrived while the season was still finding its footing. Early on they learned to watch from a little distance, then test an idea out loud before committing to it. Their own way of seeing things can feel lonely at times, yet they keep offering it to people anyway, hoping someone will meet them halfway.
Interpretation, not prediction.
The sidereal sign
| Sidereal sign, Lahiri ayanamsa | Capricorn, all 101 years |
|---|---|
| Noon Sun, sidereal Capricorn | 6.7°–8.1° |
| Convention | Indian (Vedic) astrology |
Ayanamsa convention.5
Born on January 21
- Charles V of France (1338–1380), King of France from 1364 to 1380
- Christian Dior (1905–1957), French fashion designer
- Plácido Domingo (1941), Spanish tenor and conductor
- Trương Tấn Sang (1949), former president of Vietnam
- Paul Allen (1953–2018), American businessman and philanthropist, co-founder of Microsoft
- Geena Davis (1956), American actress
- Henrikh Mkhitaryan (1989), Armenian association football player
- IShowSpeed (2005), American influencer, musician and online streamer
Birth dates checked on Wikidata.7
January 21 in history
Observed on this date:
- Babinden (Bulgaria, Serbia)
- Errol Barrow Day (Barbados)
- Flag Day (Quebec)
- Grandmother's Day (Poland)
- Lady of Altagracia Day (Dominican Republic)
- Lincoln Alexander Day (Canada)
- National Hugging Day (United States)
- Squirrel Appreciation Day
Events on January 21:
- 1525: The Swiss Anabaptist Movement is founded when Conrad Grebel, Felix Manz, George Blaurock, and about a dozen others baptize each other in the home of Manz's mother in Zürich, breaking a thousand-year tradition of church-state union.
- 1911: The first Monte Carlo Rally takes place.
- 1945: The Trade Union Council of Transcarpathian Ukraine is founded in Mukachevo.
- 1976: Commercial service of Concorde begins with the London-Bahrain and Paris-Rio routes.
- 2017: Over 400 cities across America and 160+ countries worldwide participate in a large-scale women's march, including in Portland, on Donald Trump's first full day as President of the United States.
How the answer was worked out
Each year's sign was read from the Sun's tropical longitude on January 21, calculated at noon UTC for each year from 1930 through 2030 by Astronomy Engine.1 How the Machine works
Questions people also ask
What zodiac sign is January 21?
Counting the Sun at noon UTC over the 101 sampled years from 1930 to 2030, January 21 is Aquarius every time.
Is January 21 on a zodiac cusp?
No. Every January 21 from 1930 to 2030 found the noon Sun in Aquarius, and January 21 is situated at least 0 days from the nearest change of sign.
What decan is January 21?
January 21 remains in the first decan of Aquarius (0°–10°) throughout every sampled year, so the face ruler under the Chaldean order is Venus.
What is the birthday number for January 21?
In modern numerology, the figures for January 21 are a day number of 3 and a month-day number of 4, found by adding digits.
Sources
- Astronomy Engine JavaScript reference — Don Cross, Astronomy Engine. Verified .
- Ptolemy, Tetrabiblos, Book I — LacusCurtius, University of Chicago. Verified .
- Decan (astrology): the faces of the planets (after Lilly) — Wikipedia. Verified .
- Life Path Number — Numerology.com (practitioner site). Verified .
- Ayanamsa (Lahiri and other sidereal conventions) — Wikipedia. Verified .
- Aquarius (astrology) — Wikipedia. Verified .
- Wikipedia: January 21 — Wikipedia (Wikimedia On this day feed); birth dates checked on Wikidata. Verified .