What Happened 9 Months Before You Were Born? — The Conception Date & Parental Alibi CalculatorYou're the headliner.This was the pre-show.
What was happening 9 months before you existed? Enter your birthdate to discover the historical event, Billboard #1 song, and chaos score your parents definitely used as an excuse.
Conceived during
NASA launches Gemini 3, the first US two-man space flight
“Look, when Gemini 3 achieved the first orbital maneuvers, your father said we needed to test our own thrusters.”
Things that happened nine months before someone famous (tap to load pass)
Famous pre-shows
Same nine months, same historical laws. Tap any card to run their live pre-show.
Beyoncé
The English rock group Led Zeppelin officially disbanded
“When Led Zeppelin officially called it quits, the only logical response was to put John Lennon on repeat and turn down the lights.”
December 4, 1980 · exact day
Run lookup →Harry Styles
CERN announces World Wide Web protocols will be free
“CERN made the World Wide Web free for all mankind. Naturally, we celebrated the dawn of the information age.”
May 1, 1993 · 1d before
Run lookup →Dua Lipa
Sony released the PlayStation, the first computer entertainment platform to ship 100 million units
“Look, when Sony dropped the PlayStation and Boyz II Men was blasting on the radio, things escalated very quickly.”
November 22, 1994 · 11d after
Run lookup →Princess Diana
The Flintstones, the first prime-time animated sitcom, premieres on ABC television
“The Flintstones premiered in prime time, Bedrock was rocking, and we got completely carried away.”
October 1, 1960 · 1d before
Run lookup →Julia Roberts
The first Super Bowl is played in Los Angeles. The Green Bay Packers defeat the Kansas City Chiefs 35–10
“The Green Bay Packers took Super Bowl I, and the victory party moved straight from the living room to the bedroom.”
January 28, 1967 · 13d before
Run lookup →Jim Carrey
The Soviet cosmonaut Yuri Gagarin becomes the first human to travel into outer space — Vostok 1
“The first human orbited the Earth in outer space! The entire planet was in cosmic euphoria—can you really blame us?”
April 17, 1961 · 5d before
Run lookup →Michael Jordan
Marvel Comics publishes the first issue of The Incredible Hulk
“The Incredible Hulk #1 hit newsstands, and things in the house got a little overly energetic.”
May 17, 1962 · 7d before
Run lookup →Brad Pitt
Please Please Me, the first album recorded by the Beatles, was released
“The Beatles dropped their debut record, Beatlemania was in the air, and resistance was futile.”
March 18, 1963 · 4d after
Run lookup →Elon Musk
Michael Eavis hosts the first Glastonbury Festival
“Michael Eavis launched Glastonbury in the mud, Diana Ross was on the stereo, and romance won.”
September 28, 1970 · 9d before
Run lookup →Frequently Asked Questions
Everything you need to know about how your pre-show is calculated, curated, and protected.
What was happening 9 months before I was born?
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preshow.date calculates your conception window (~9 months before your birthdate) and surfaces the major historical events, cultural milestones, and astronomical moments that happened around that date.
Does preshow.date save or store my birthdate?
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Never. Your birthdate is processed entirely inside your browser. No birthdate is sent to our servers, stored in databases, or tracked in cookies. Read our full Privacy Policy for details.
How is the pre-show event chosen?
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We calculate your conception date (local birthdate minus 9 months) and search a ±2-week window for the most significant historical event, scoring real dated events over recurring observances.
What is the Chaos Score?
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The Chaos Score rates the historical unpredictability and cultural intensity of your pre-show event on a scale from 1 to 10, ranging from serene diplomatic agreements to full-blown cultural pandemonium.