Born on January 31
A January 31 birthday is Aquarius.
On January 31 the Sun is at about 11° Aquarius, between 9° and 12° Aquarius depending on your birth year, time and place. Your Sun sign is one placement of dozens: your Moon, your rising sign and every planet's position at the moment you were born make the whole picture.
Your chart
Your Sun sign is the trailer
See your whole chart — Moon, rising, and what the sky is doing over it today.
The sky on your birthday
The Sun on January 31
- Sun position
- 9°–12° Aquarius
- Every position a January 31 birth can have, 1925 to 2025, any time zone.
- Decan
- First or second decan of Aquarius
- The first or second decan of Aquarius: the Sun crosses 10° Aquarius around this date, so your birth year and time decide which.
- Aquarius season
- January 21 – February 18
- The usual dates for births 1925 to 2025. The first and last days can fall either side.
- Day of the year
- 31
- Day 31 in a leap year.
Your Sun
What Aquarius carries
Sun in Aquarius
The Sun is your center of gravity — the thing you keep returning to. Read what Aquarius actually means, then go past it: your chart has a Moon, a rising sign, and a live sky moving over it right now.
Good company
Famous January 31 birthdays
People who share your birthday — and, for the ones with a verified birth time, a full natal chart you can read.
Nearby
Birthdays either side
Common questions
January 31 birthdays, answered
What zodiac sign is January 31?
Aquarius. For births from 1925 to 2025, the Sun on January 31 is between 9° and 12° Aquarius.
What decan is January 31?
The first or second decan of Aquarius: the Sun crosses 10° Aquarius around this date, so your birth year and time decide which.
What famous people were born on January 31?
Jackie Robinson (1919).
What day of the year is January 31?
Day 31, or day 31 in a leap year.
Your turn
Your Sun sign is the trailer
See your whole chart — Moon, rising, and what the sky is doing over it today.