Born On Box

March 31 Birthday

Zodiac sign, birthstone, birth flower and more for everyone born on March 31.

The zodiac sign for March 31 is

Aries

Aries runs March 21 – April 19. March 31 is day 11 of 30 in Aries season, in the 2nd decan.

Zodiac sign

Aries

Ram · Fire · Cardinal

Birthstone

Aquamarine

Also Bloodstone

Birth flower

Daffodil

Also jonquil

Ruling planet

Mars

Decan ruler: Sun

How common

#314 of 366

10,807 US births a year

Day of the year

Day 90

Day 91 in a leap year

March 31 zodiac sign: Aries

Aries opens the zodiac, so it is linked with beginnings. People born under the Ram are said to be natural starters who like a challenge, move fast and say what they think.

Symbol♈ Ram
DatesMarch 21 – April 19
ElementFire
ModalityCardinal
Ruling planetMars
Traitsbold, competitive, energetic, direct
StrengthsCourageous, quick to act, honest and full of enthusiasm.
WeaknessesImpatient, impulsive and quick to anger.
Opposite signLibra
Most compatible withGemini, Leo, Libra, Sagittarius, Aquarius

The 2nd decan of Aries

Each sign is split into three decans of about ten days. March 31 falls in the 2nd decan, which is co-ruled by Sun, the planet of Leo. Astrologers say this adds a touch of Leo (confident, generous) to the Aries personality.

March 31 birthstone: Aquamarine and Bloodstone

Everyone born in March shares the same birthstones, and you can pick whichever you like.

StoneColorHardness (Mohs)Said to symbolize
AquamarinePale blue7.5–8Courage and calm, a talisman for sailors
BloodstoneDark green with red spots6.5–7Strength and good health

March 31 birth flower: Daffodil and Jonquil

More about March birthdays

How common is a March 31 birthday?

March 31 is the 314th most common birthday in the US out of 366. An average of 10,807 babies were born on it each year from 1994 to 2014, 3% fewer than on an average day.

Based on US birth records, 1994–2014. See every date ranked.

What day of the week was March 31?

Here’s the day of the week March 31 fell on each year, and the Chinese zodiac animal for someone born that day.

Birth dateDay of the weekChinese zodiac
March 31, 2030SundayMetal Dog
March 31, 2029SaturdayEarth Rooster
March 31, 2028FridayEarth Monkey
March 31, 2027WednesdayFire Goat
March 31, 2026TuesdayFire Horse
March 31, 2025MondayWood Snake
March 31, 2024SundayWood Dragon
March 31, 2023FridayWater Rabbit
March 31, 2022ThursdayWater Tiger
March 31, 2021WednesdayMetal Ox
March 31, 2020TuesdayMetal Rat
March 31, 2019SundayEarth Pig
March 31, 2018SaturdayEarth Dog
March 31, 2017FridayFire Rooster
March 31, 2016ThursdayFire Monkey
March 31, 2015TuesdayWood Goat
March 31, 2014MondayWood Horse
March 31, 2013SundayWater Snake
March 31, 2012SaturdayWater Dragon
March 31, 2011ThursdayMetal Rabbit
March 31, 2010WednesdayMetal Tiger
March 31, 2009TuesdayEarth Ox
March 31, 2008MondayEarth Rat
March 31, 2007SaturdayFire Pig
March 31, 2006FridayFire Dog
March 31, 2005ThursdayWood Rooster
March 31, 2004WednesdayWood Monkey
March 31, 2003MondayWater Goat
March 31, 2002SundayWater Horse
March 31, 2001SaturdayMetal Snake
March 31, 2000FridayMetal Dragon
March 31, 1999WednesdayEarth Rabbit
March 31, 1998TuesdayEarth Tiger
March 31, 1997MondayFire Ox
March 31, 1996SundayFire Rat
March 31, 1995FridayWood Pig
March 31, 1994ThursdayWood Dog
March 31, 1993WednesdayWater Rooster
March 31, 1992TuesdayWater Monkey
March 31, 1991SundayMetal Goat
March 31, 1990SaturdayMetal Horse
March 31, 1989FridayEarth Snake
March 31, 1988ThursdayEarth Dragon
March 31, 1987TuesdayFire Rabbit
March 31, 1986MondayFire Tiger
March 31, 1985SundayWood Ox
March 31, 1984SaturdayWood Rat
March 31, 1983ThursdayWater Pig
March 31, 1982WednesdayWater Dog
March 31, 1981TuesdayMetal Rooster
March 31, 1980MondayMetal Monkey
March 31, 1979SaturdayEarth Goat
March 31, 1978FridayEarth Horse
March 31, 1977ThursdayFire Snake
March 31, 1976WednesdayFire Dragon
March 31, 1975MondayWood Rabbit
March 31, 1974SundayWood Tiger
March 31, 1973SaturdayWater Ox
March 31, 1972FridayWater Rat
March 31, 1971WednesdayMetal Pig
March 31, 1970TuesdayMetal Dog
March 31, 1969MondayEarth Rooster
March 31, 1968SundayEarth Monkey
March 31, 1967FridayFire Goat
March 31, 1966ThursdayFire Horse
March 31, 1965WednesdayWood Snake
March 31, 1964TuesdayWood Dragon
March 31, 1963SundayWater Rabbit
March 31, 1962SaturdayWater Tiger
March 31, 1961FridayMetal Ox
March 31, 1960ThursdayMetal Rat
March 31, 1959TuesdayEarth Pig
March 31, 1958MondayEarth Dog
March 31, 1957SundayFire Rooster
March 31, 1956SaturdayFire Monkey
March 31, 1955ThursdayWood Goat
March 31, 1954WednesdayWood Horse
March 31, 1953TuesdayWater Snake
March 31, 1952MondayWater Dragon
March 31, 1951SaturdayMetal Rabbit
March 31, 1950FridayMetal Tiger
March 31, 1949ThursdayEarth Ox
March 31, 1948WednesdayEarth Rat
March 31, 1947MondayFire Pig
March 31, 1946SundayFire Dog
March 31, 1945SaturdayWood Rooster
March 31, 1944FridayWood Monkey
March 31, 1943WednesdayWater Goat
March 31, 1942TuesdayWater Horse
March 31, 1941MondayMetal Snake
March 31, 1940SundayMetal Dragon

More about March 31

Season (Northern Hemisphere)Spring
Day of the year90 (91 in a leap year)
Days left in the year275 (275 in a leap year)

Want your exact age or a countdown? Try the age calculator on our sister site Day Count Box.

March 31 birthday questions

What zodiac sign is March 31?
People born on March 31 are Aries (♈), the Ram. Aries season runs from March 21 – April 19.
What is the birthstone for March 31?
The birthstone for March 31 is the March birthstone: aquamarine and bloodstone.
What is the birth flower for March 31?
March’s birth flowers are the daffodil and jonquil.
Is March 31 on a cusp?
No. March 31 is well inside Aries season, so the sign is the same whatever the year.
How rare is a March 31 birthday?
March 31 is the 314th most common birthday in the US out of 366. An average of 10,807 babies were born on it each year from 1994 to 2014, 3% fewer than on an average day.
What day of the year is March 31?
March 31 is day 90 of the year, or day 91 in a leap year.

Other March birthdays