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Jan Oort
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Jan Oort

Dutch astronomer (1900–1992)

Jan Hendrik Oort was a Dutch astronomer who made significant contributions to the understanding of the Milky Way and who was a pioneer in the field of radio astronomy. The New York Times called him "one of the century's foremost explorers of the universe"; the European Space Agency website describes him as "one of the greatest astronomers of the 20th century" and states that he "revolutionised astronomy through his ground-breaking discoveries." In 1955, Oort's name appeared in Life magazine's list of the 100 most famous living people. He has been described as "putting the Netherlands in the forefront of postwar astronomy".

Jan Oort was born on Saturday, 28. April 1900.
That was day 118 of the year 1900.

Past away on Donnerstag November 5, 1992

Age when dead:
92 Jahre 6 Monate 7 Tage

Next birthday would be:
Wednesday April 28, 1993

Jan Oort is already dead since:
33 Jahre 0 Monate 17 Tage

Jan Oort was alive for 33794 days.
Jan Oort is already dead for 12070 days.
Difference: 21724 days (59,48 years).

Jan Oort has the same birthday like
Otho, Yves Klein and Émile Bernard

The death date of Jan Oort is the birthday of
Alvin Drew, Uwe Seeler and Tilda Swinton

Who has the same birthday as Jan Oort?

Famous people and celebrities

April 28 is also the birthday of:

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Date of Birth: April 28, 1868

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Date of Birth: April 28, 1928

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Date of Birth: April 28, 1987
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Date of Birth: April 28, 1906

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Date of Birth: April 28, 1974
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Date of Birth: April 30, 32

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Date of Birth: April 28, 1758

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Same vintage - 1900

These people were born in the same year

Adolf Dassler

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Date of Birth: November 3, 1900

Date of Death: September 6, 1978
Howard H. Aiken

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Date of Birth: March 8, 1900

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Alice Neel

Alice Neel

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Date of Birth: January 28, 1900

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Date of Birth: May 5, 1900

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Cecilia Payne-Gaposchkin

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Jan Oort

Jan Oort

Dutch astronomer (1900–1992)

Date of Birth: April 28, 1900

Date of Death: November 5, 1992
Hans Krebs

Hans Krebs

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Date of Birth: August 25, 1900

Date of Death: November 22, 1981
Hans Stuck

Hans Stuck

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Date of Birth: December 27, 1900

Date of Death: February 9, 1978
Hans Krebs (biochemist)

Hans Krebs (biochemist)

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Date of Birth: August 25, 1900

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Did you know? Jan Oort is ...

Lost Generation

Period: 1883 ‐ 1900

At 92 years, Jan Oort belongs to the "Lost Generation". Well-known figures of this generation include Frederick Banting, Thorsten Sellin und Srinivasa Ramanujan.

Astrology

Zodiac

♉ Taurus

(April 21, 1900 - May 20, 1900)

Life Number

6

(Perfectionist, creative, ambitious)

Zodiac sign

Rat

(April 21, 1900 - May 20, 1900)

Birthstone

Diamond

(Strength, purity, eternity)

Age in absolute numbers

Since Jan Oort was born...

2.919.801.600 Seconds
48.663.360 Minutes
811.056 Hours
33.794 Days
4.827 Weeks
1507 Months
92 Years
9.25 Decades
0.93 Centuries

On April 7, 2026 would be Jan Oort exactly 46000 days old.
On June 24, 2034 would be Jan Oort exactly 7000 weeks old.

By the way: Since you are here you are getting seconds older 😉

Milestones

Successes that speak for themselves

With 92 years alive you reached these milestones:

Sleeping

11.265 days

A human spends about one third of their life sleeping. That’s an average of around 11.265 hours per day. At your age of 93 years, that equals approximately 11.265 days (30,84 years).

Eat & Drink

1.408 days

The average person spends about 1 hour a day eating and drinking. At 93 years, you have therefore spent approximately 1.408 days eating. (3,86 years).

Toilet visits

704 days

The average person spends about 30 minutes on the toilet every day. That's a total of 704 days (1,93 years).

Wait

1.173 days

The average person spends about 30 minutes on the toilet every day. That's a total of 1.173 days (3,21 years).

Laugh

141 days

We laugh for about six minutes a day. That's actually far too less. That's a total of 141 days (0,39 years).

Brush teeth

94 days

We laugh for about six minutes a day. That's actually far too less. That's a total of 94 days (0,26 years).

Work

9.153 days

We laugh for about six minutes a day. That's actually far too less. That's a total of 9.153 days (25,06 years).




Name Zahl Beschreibung
Breaths 875.940.480 Approximately 18 Breaths per minute
Heartbeats 3.649.752.000 Approximately 50-100 heartbeats per minute, depending on your lifestyle. We'll take the average at 75.
Blink 729.950.400 A human blinks roughly 15 times per minute.
Cough 506.910 A human has an average of 15 coughs per day.
Colds 185 A person gets about 2 colds per year.
Sweat produced 5.069 A person produces approximately 0.5–1.5 liters of sweat per day, depending on lifestyle. We'll take the average at 1 liter per day.
Fart gases produced (in Liters) 33.794 A person farts approximately 12 times a day, producing almost 0.8 liters of gas.
Flies swatted 648 We swat 7 flies per year.
Mosquitoes killed 1.665 We kill approximately 18 mosquitoes per year.
Red blood cells formed 675.880.000.000.000 A person produces approximately 20 billion red blood cells per day.
Hair grown (in mm) 11.152 Our hair grows approximately 0.33mm per day.
Fingernails grown (in mm) 3.862 Fingernails grow approximately 0.8mm per week.
Cookies eaten 40.215 We eat approximately 35,000 cookies in our lifetime.
Bouts of vomiting 370 A person vomits approximately four times a year, depending on lifestyle.

Information is based on statistical average values of a person.

Travelled distances

Always on the move

According to statistical averages, you have walked 121.658 kilometers in your life...


... that corresponds to 3,04 orbits of the Earth...


... 11,14 moon orbits.


... and 5,70 Mars orbit on foot.



121.658 kilometers means:

4.626 years with a snail 🐌 (at 3m/h).
905 days on a donkey 🫏 (at 5,6km/h).
634 days on a Skateboard 🛹 (at 8km/h).
169 days travel with a subway train 🚇 (at 30km/h).
6 days on a plane ✈️ (at 800km/h)
4,34 hours on a Spaceshuttle 🚀 (at 28.000km/h)
119,98 minutes with spaceship Voyager 1 🚀 (at 60840km/h)
10,58 minutes with Parker Space Probe - the fastest object made by humans 🚀 (at 690000km/h)

and

4,11 days sonic speed (at 1234,8 km/h)
0,41 seconds light speed (at 1,08 Mrd km/h)

Astronomy

Our Solar System

During the lifetime of Jan Oort ...

... the Moon has orbited Earth 1.237 times.
... Mercury has orbited Sun 384,16 times.
... Venus has orbited Sun 150,40 times.
... Earth has orbited Sun 92,52 times.
... Mars has orbited Sun 49,19 times.
... Jupiter has orbited Sun 7,80 times.
... Saturn has orbited Sun 3,14 times.
... Uranus has orbited Sun 1,10 times.
... Neptune has orbited Sun 0,56 times.
... Pluto has orbited Sun 0,37 times.

My special birthdays

Der nächste runde Geburtstag von Jan Oort wäre der 130. Geburtstag. Er findet am Sunday, den 28.04.2030 statt.

Birthday Year Weekday Date Candles blown
10. 1910 Thursday April 28, 1910 55
18. 1918 Sunday April 28, 1918 171
20. 1920 Wednesday April 28, 1920 210
25. 1925 Tuesday April 28, 1925 325
30. 1930 Monday April 28, 1930 465
40. 1940 Sunday April 28, 1940 820
50. 1950 Friday April 28, 1950 1275
60. 1960 Thursday April 28, 1960 1830
70. 1970 Tuesday April 28, 1970 2485
80. 1980 Monday April 28, 1980 3240
90. 1990 Saturday April 28, 1990 4095
100. 2000 Friday April 28, 2000 5050
110. 2010 Wednesday April 28, 2010 6105
120. 2020 Tuesday April 28, 2020 7260
130. 2030 Sunday April 28, 2030 8515
140. 2040 Saturday April 28, 2040 9870
150. 2050 Thursday April 28, 2050 11325
---

Birthday in numbers

Other Number systems

Decimal:
28 • 4 • 1900
Binary:
11100 • 100 • 11101101100
Hexadecimal:
1c • 4 • 76c
Octal:
34 • 4 • 3554
Roman:
XXVIII • IV • MCM
Morsecode:
··−−− −−−·· ·−·−·− −−−−− ····− ·−·−·− ·−−−− −−−−· −−−−− −−−−−
Numbers to letters:
ci • ae • bjaa
Cross sum:
24
Factor product:
212800
Birthday in words:
twenty eight • four • one thousand nine hundred

Historical Events

How old was Jan Oort back then?

no data

Als Jugendlicher 10-20 Jahre

January 16, 1920
Prohibition begins in the United States with the 18th Amendment, banning the manufacture, sale, and transport of alcoholic beverages. (Age: 19 years and 8 months) 🔗

Als Erwachsener 20-30 Jahre

August 18, 1920
The 19th Amendment is ratified, granting women the right to vote across the United States. (Age: 20 years and 3 months) 🔗
March 12, 1921
The Soviet Union adopts the New Economic Policy (NEP), allowing some private enterprise to boost the post-war economy. (Age: 20 years and 10 months) 🔗
February 28, 1922
The United Kingdom unilaterally declares Egypt independent, ending the British protectorate. (Age: 21 years and 10 months) 🔗
October 28, 1922
Benito Mussolini and his Fascist party seize power in Italy following the March on Rome. (Age: 22 years and 6 months) 🔗
November 4, 1922
Howard Carter discovers the tomb of Tutankhamun in Egypt's Valley of the Kings, sparking a global frenzy for archaeology. (Age: 22 years and 6 months) 🔗
December 30, 1922
The Union of Soviet Socialist Republics (USSR) is officially established. (Age: 22 years and 8 months) 🔗
October 29, 1923
The Republic of Turkey is proclaimed by Mustafa Kemal Atatürk, marking the end of the Ottoman Empire. (Age: 23 years and 6 months) 🔗
January 21, 1924
Vladimir Lenin, the leader of the Bolshevik Revolution and first head of the Soviet Union, dies. (Age: 23 years and 8 months) 🔗
January 24, 1924
The first Winter Olympics take place in Chamonix, France, establishing a new tradition in international sport. (Age: 23 years and 8 months) 🔗
February 23, 1925
The discovery of the Andromeda galaxy as a separate "island universe" outside of the Milky Way is confirmed by Edwin Hubble. (Age: 24 years and 9 months) 🔗

Als Erwachsener 30-40 Jahre

September 18, 1931
The Mukden Incident provides the pretext for Japan's invasion of Manchuria, China, marking a key step toward World War II. (Age: 31 years and 4 months) 🔗
May 20, 1932
Amelia Earhart begins her solo non-stop transatlantic flight, becoming the first woman to achieve this feat. (Age: 32 years and 0 months) 🔗
January 30, 1933
Adolf Hitler is appointed Chancellor of Germany, leading to the rapid consolidation of Nazi power and the end of the Weimar Republic. (Age: 32 years and 9 months) 🔗
March 4, 1933
Franklin D. Roosevelt is inaugurated as U.S. President and begins his "First Hundred Days," launching the New Deal program. (Age: 32 years and 10 months) 🔗
January 19, 1934
The discovery of artificial radioactivity by Irène and Frédéric Joliot-Curie is announced, leading to their Nobel Prize. (Age: 33 years and 8 months) 🔗
August 19, 1934
A German plebiscite votes to merge the offices of President and Chancellor, making Adolf Hitler the sole Führer (leader) of Germany. (Age: 34 years and 3 months) 🔗
August 14, 1935
The Social Security Act is signed into law in the U.S., establishing a system of retirement, unemployment, and welfare benefits. (Age: 35 years and 3 months) 🔗
September 15, 1935
The Nuremberg Laws are enacted in Germany, institutionalizing racial theories and stripping German Jews of their citizenship. (Age: 35 years and 4 months) 🔗
February 6, 1936
The Winter Olympics open in Garmisch-Partenkirchen, Germany, followed by the Summer Games in Berlin, used by the Nazis for propaganda. (Age: 35 years and 9 months) 🔗
July 17, 1936
The Spanish Civil War begins with a military coup against the Republican government, leading to three years of brutal conflict. (Age: 36 years and 2 months) 🔗

Als Erwachsener 40-50 Jahre

May 10, 1940
Germany launches its invasion of France, Belgium, Luxembourg, and the Netherlands, initiating the Battle of France. (Age: 40 years and 0 months) 🔗
August 13, 1940
The Battle of Britain begins, a large-scale aerial conflict where the Royal Air Force defends the UK against the German Luftwaffe. (Age: 40 years and 3 months) 🔗
June 22, 1941
Germany launches Operation Barbarossa, the invasion of the Soviet Union, opening the Eastern Front. (Age: 41 years and 1 months) 🔗
December 7, 1941
Japan attacks the U.S. naval base at Pearl Harbor, prompting the United States to formally enter World War II. (Age: 41 years and 7 months) 🔗
June 4, 1942
The Battle of Midway, a decisive naval victory for the U.S. against Japan, marks a turning point in the Pacific War. (Age: 42 years and 1 months) 🔗
August 23, 1942
The Battle of Stalingrad begins, one of the largest and bloodiest battles in the history of warfare. (Age: 42 years and 3 months) 🔗
September 8, 1943
Italy surrenders to the Allies, though fighting continues as German forces occupy northern Italy. (Age: 43 years and 4 months) 🔗
June 6, 1944
D-Day: Allied forces launch Operation Overlord, landing on the beaches of Normandy, beginning the liberation of Western Europe. (Age: 44 years and 1 months) 🔗
April 30, 1945
Adolf Hitler commits suicide in his Berlin bunker as Soviet troops close in. (Age: 45 years and 0 months) 🔗
May 8, 1945
V-E Day (Victory in Europe Day): The Allies formally accept the unconditional surrender of Nazi Germany. (Age: 45 years and 0 months) 🔗

Als Erwachsener 50-60 Jahre

June 25, 1950
North Korea invades South Korea, starting the Korean War, a major conflict of the Cold War era. (Age: 50 years and 1 months) 🔗
March 29, 1951
The 22nd Amendment to the U.S. Constitution is ratified, limiting the U.S. President to two terms. (Age: 50 years and 11 months) 🔗
February 6, 1952
Elizabeth II ascends to the throne upon the death of her father, King George VI. (Age: 51 years and 9 months) 🔗
April 25, 1953
James Watson and Francis Crick publish their paper describing the double helix structure of DNA, a monumental discovery in biology. (Age: 52 years and 11 months) 🔗
June 17, 1953
The Uprising of 1953 in East Germany occurs, where protests against economic policy are suppressed by Soviet troops. (Age: 53 years and 1 months) 🔗
June 18, 1953
Egypt is declared a republic, ending the Muhammad Ali dynasty. (Age: 53 years and 1 months) 🔗
May 17, 1954
The U.S. Supreme Court rules in Brown v. Board of Education, declaring state-sponsored segregation in public schools unconstitutional. (Age: 54 years and 0 months) 🔗
July 20, 1954
The Geneva Accords are signed, dividing Vietnam into North and South along the 17th parallel. (Age: 54 years and 2 months) 🔗
April 18, 1955
Albert Einstein, the German-born theoretical physicist and creator of the theory of relativity, dies at age 76. (Age: 54 years and 11 months) 🔗
May 14, 1955
The Warsaw Pact, a mutual defense treaty, is established by the Soviet Union and Eastern Bloc countries as a counterbalance to NATO. (Age: 55 years and 0 months) 🔗

Als Erwachsener 60-70 Jahre

July 1, 1960
Ghana becomes a republic, with Kwame Nkrumah as its first president. (Age: 60 years and 2 months) 🔗
April 12, 1961
Yuri Gagarin becomes the first human to travel into outer space and orbit the Earth. (Age: 60 years and 11 months) 🔗
August 13, 1961
East Germany begins construction of the Berlin Wall, dividing East and West Berlin and symbolizing the Cold War. (Age: 61 years and 3 months) 🔗
October 16, 1962
The Cuban Missile Crisis begins, bringing the United States and the Soviet Union to the brink of nuclear war. (Age: 62 years and 5 months) 🔗
August 28, 1963
Martin Luther King Jr. delivers his "I Have a Dream" speech during the March on Washington for Jobs and Freedom. (Age: 63 years and 4 months) 🔗
November 22, 1963
U.S. President John F. Kennedy is assassinated in Dallas, Texas. (Age: 63 years and 6 months) 🔗
July 2, 1964
The Civil Rights Act of 1964 is signed into law, outlawing discrimination based on race, color, religion, sex, or national origin. (Age: 64 years and 2 months) 🔗
October 14, 1964
Martin Luther King Jr. is awarded the Nobel Peace Prize. (Age: 64 years and 5 months) 🔗
March 7, 1965
The "Bloody Sunday" confrontation occurs during the Selma to Montgomery marches, highlighting the need for voting rights legislation. (Age: 64 years and 10 months) 🔗
August 6, 1965
The Voting Rights Act of 1965 is signed, overcoming legal barriers that prevented African Americans from exercising their right to vote. (Age: 65 years and 3 months) 🔗

Als Erwachsener 70-80 Jahre

June 21, 1970
Brazil wins the FIFA World Cup, permanently keeping the Jules Rimet trophy after their third victory. (Age: 70 years and 1 months) 🔗
January 2, 1971
The Public Health Cigarette Smoking Act is passed in the US, banning cigarette advertising on television and radio. (Age: 70 years and 8 months) 🔗
August 15, 1971
U.S. President Richard Nixon ends the convertibility of the US dollar to gold, effectively ending the Bretton Woods system. (Age: 71 years and 3 months) 🔗
June 17, 1972
Five men are arrested for breaking into the Democratic National Committee headquarters at the Watergate complex, triggering the scandal. (Age: 72 years and 1 months) 🔗
September 5, 1972
The Munich Massacre occurs at the Summer Olympics, where members of the Israeli Olympic team are taken hostage and killed by Palestinian terrorists. (Age: 72 years and 4 months) 🔗
January 27, 1973
The Paris Peace Accords are signed, formally ending U.S. involvement in the Vietnam War. (Age: 72 years and 8 months) 🔗
October 6, 1973
The Yom Kippur War begins as Egypt and Syria launch a surprise attack on Israel. (Age: 73 years and 5 months) 🔗
October 17, 1973
OPEC places an oil embargo on nations supporting Israel, triggering the 1973 oil crisis and major economic disruption. (Age: 73 years and 5 months) 🔗
August 9, 1974
Richard Nixon resigns as U.S. President following the Watergate scandal, the only U.S. President ever to do so. (Age: 74 years and 3 months) 🔗
April 30, 1975
The Fall of Saigon marks the end of the Vietnam War, with North Vietnamese forces capturing the South Vietnamese capital. (Age: 75 years and 0 months) 🔗

Als Erwachsener 80-90 Jahre

May 18, 1980
The eruption of Mount St. Helens in Washington state, a major volcanic eruption that caused widespread devastation. (Age: 80 years and 0 months) 🔗
December 8, 1980
John Lennon, a co-founder of The Beatles, is assassinated in New York City. (Age: 80 years and 7 months) 🔗
April 12, 1981
The first Space Shuttle, Columbia (STS-1), launches from Kennedy Space Center, marking a new era of reusable spacecraft. (Age: 80 years and 11 months) 🔗
June 5, 1981
The U.S. CDC reports the first cases of what would later be known as AIDS, marking the beginning of the global pandemic. (Age: 81 years and 1 months) 🔗
August 12, 1981
IBM releases the IBM Personal Computer (Model 5150), popularizing personal computing for business and home use. (Age: 81 years and 3 months) 🔗
April 2, 1982
Argentina invades the Falkland Islands, starting the Falklands War with the United Kingdom. (Age: 81 years and 11 months) 🔗
January 1, 1983
The ARPANET officially switches to the TCP/IP protocol, considered the "birth" of the modern Internet. (Age: 82 years and 8 months) 🔗
January 24, 1984
Apple Computer launches the Macintosh, the first commercially successful personal computer with a graphical user interface (GUI). (Age: 83 years and 8 months) 🔗
December 2, 1984
A gas leak at the Union Carbide pesticide plant in Bhopal, India, kills thousands and is considered the world's worst industrial disaster. (Age: 84 years and 7 months) 🔗
March 11, 1985
Mikhail Gorbachev becomes General Secretary of the Communist Party of the Soviet Union, initiating policies of Glasnost and Perestroika. (Age: 84 years and 10 months) 🔗

Als Erwachsener 90-100 Jahre

October 3, 1990
German Reunification. East and West Germany are officially reunified, forming the Federal Republic of Germany. (Age: 90 years and 5 months) 🔗
January 17, 1991
Operation Desert Storm, the air and ground offensive to liberate Kuwait from Iraqi occupation, begins. (Age: 90 years and 8 months) 🔗
August 6, 1991
Tim Berners-Lee posts a summary of the World Wide Web project, making it publicly available. (Age: 91 years and 3 months) 🔗
December 26, 1991
The Soviet Union is officially dissolved, ending the Cold War. (Age: 91 years and 7 months) 🔗
April 6, 1992
The Bosnian War, an international armed conflict, begins in Bosnia and Herzegovina. (Age: 91 years and 11 months) 🔗

Geburtstags-FAQ von Jan Oort

Frequently asked questions

How many birthday candles did Jan Oort blow out so far?

» At 92 years, Jan Oort has already blown out 4278 birthday candles, if you add up all the birthdays.

When will Jan Oort be twice as old as today?

» Jan Oort ist 33.794 days old today. On 15.05.2085 Jan Oort will be twice as old as today. Jan Oort will then be 185 Jahre und 0 Monate years old.

When will Jan Oort be half as old as today?

» On 02.08.1946 Jan Oort was half of age today. Back then Jan Oort were 46 Jahre und 3 Monate years old.

When was Jan Oort conceived? - Time of your conception

» That's an interesting question. Let's try it this way: A pregnancy lasts an average of 268 days. If we subtract 268 days from the day of your birth (03.08.1899), we get the 03.08.1899. However, this statement is not very meaningful, since only 3% of pregnant women actually give birth after 268 days. Most pregnant women give birth within a time window of 10 days from the actual due date. Therefore, Jan Oort were conceived between 24.07.1899 and 13.08.1899.

How many prime number birthdays has Jan Oort had so far?

» At 92 years old, Jan Oort has already celebrated 24 prime number birthdays (2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89).

How many special birthdays have I had so far?

» At 92 years, you've already celebrated 8 special number birthdays (11, 22, 33, 44, 55, 66, 77, 88). To be able to celebrate 10 special number birthdays, you have to live to be 111. But you still have some time until then. You'll celebrate your 111th birthday on 28.04.2011. You can find out more on the page with all birthdays.

How old was Jan Oort at the turn of the millennium in 2000?

» Jan Oort was born exactly 36407 days before the turn of the millennium in January 1, 2000. At that time, Jan Oort was 99 years and 8 months old.

Oldest person in the world

Jan Oort is currently 30 years younger (44715 days) than the officially oldest person in the world, the Frenchwoman Jeanne Calment. She was born on February 21, 1875 and died on August 4, 1997 at the age of 122 years and 164 days.

Jan Oort has lived 21724 days longer than he/she was dead.

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