In short
On December 7, 1941, Japan's Imperial Navy launched a surprise military attack on the U.S. Pacific Fleet anchored at Pearl Harbor, Hawaii, killing over 1,100 sailors and destroying dozens of American warships and aircraft. The assault, carried out by planes launched from Japanese aircraft carriers, shattered U.S. neutrality and brought America into World War II the next day.
How it unfolded.
The five-minute version
What actually happened.
On December 7, 1941, the Empire of Japan launched a surprise military strike on the United States Pacific Fleet at its naval base at Pearl Harbor on Oahu, Hawaii Territory. At the time, the US was a neutral country in World War II. The air raid on Pearl Harbor, which was launched from aircraft carriers, prompted the US to declare war on Japan the next day. The Japanese military leadership referred to the attack as the Hawaii Operation and Operation AI, and as Operation Z during its planning.
As it was happening
17 voices, 1793 days.
One beat at a time. Click any dot on the timeline to jump, press play for autoplay, or use the arrow keys to step.
Second Sino-Japanese War begins
Japan invades China, beginning territorial expansion in the Pacific region that sets the strategic context for the Pearl Harbor operation.
Voices from this moment (1)
Second Sino-Japanese War begins
Jul 7
“Japan invades China, beginning territorial expansion in the…”
As it was happening
17 voices, 1793 days.
Day 0 · July 7, 1937
Second Sino-Japanese War begins
Japan invades China, beginning territorial expansion in the Pacific region that sets the strategic context for the Pearl Harbor operation.
“Japan invades China, beginning territorial expansion in the…”
- Second Sino-Japanese War begins, Jul 7
Day 786 · September 1, 1939
World War II begins in Europe
Germany invades Poland; Britain and France declare war. The U.S. remains neutral while Japan pursues its own expansion agenda.
“Germany invades Poland; Britain and France declare war.”
- World War II begins in Europe, Sep 1
Day 1480 · July 26, 1941
U.S. imposes oil embargo on Japan
America halts oil shipments to Japan in response to Japanese invasion of French Indochina, escalating tensions and pushing Japan toward military action in the Pacific.
“America halts oil shipments to Japan in response to…”
- U.S. imposes oil embargo on Japan, Jul 26
Day 1614 · December 7, 1941
Pearl Harbor attack
Japanese carriers launch 353 aircraft in a coordinated assault on the U.S. Pacific Fleet. The attack kills 1,177 military personnel and 68 civilians, sinking or crippling eight battleships.
“We interrupt this program to bring you a special news…”
- CBS Radio Broadcast, December 7, 1941, Dec 7
“America has awakened from a long sleep.”
- Synthesized from period accounts - War Department communications, December 7, 1941, Dec 7
“Flash - Japan Attacks Pearl Harbor; Casualties Heavy”
- Associated Press Radio Broadcast, Dec 7
“Japanese carriers launch 353 aircraft in a coordinated…”
- Pearl Harbor attack, Dec 7
“I will command the American naval forces in the Pacific as…”
- Synthesized from period accounts - Hawaiian news archives, December 7, 1941, Dec 7
Day 1615 · December 8, 1941
U.S. declares war on Japan
President Franklin D. Roosevelt addresses Congress, calling December 7 'a date which will live in infamy.' Congress votes overwhelmingly to declare war.
“Yesterday, December 7, 1941 - a date which will live in…”
- Address to Joint Session of Congress, December 8, 1941, Dec 8
“The war is no longer a European war or an Asiatic war.”
- Syndicated column, December 8, 1941, Dec 8
“Japan Wars on U.”
- The New York Times, Dec 8
“Japan's Sudden Onslaught - Attack on United States”
- The Times (London), Dec 8
“U.S. at War - Japan Strikes in Pacific”
- The Chicago Tribune, Dec 8
“Japan Declares War on America - Pacific Bases Attacked”
- The Sydney Morning Herald, Dec 8
“President Franklin D.”
- U.S. declares war on Japan, Dec 8
Day 1618 · December 11, 1941
Germany and Italy declare war on U.S.
Hitler and Mussolini formally declare war on the United States, bringing America into the European theater as well and creating a two-front global conflict.
“Hitler and Mussolini formally declare war on the United…”
- Germany and Italy declare war on U.S., Dec 11
Day 1793 · June 4, 1942
Battle of Midway
Six months after Pearl Harbor, the U.S. Navy defeats the Japanese fleet at Midway, marking the turning point in the Pacific War and demonstrating American recovery and resolve.
“Six months after Pearl Harbor, the U.”
- Battle of Midway, Jun 4
The numbers.
6 numbers that anchor the scale.
By the numbers
The countable parts.
U.S. military deaths
0 (Navy and Marines)
Civilian deaths
0
Japanese aircraft involved
0 aircraft from six aircraft carriers
U.S. ships sunk or severely damaged
0 battleships; 3 cruisers; 4 other vessels
U.S. aircraft destroyed
0 aircraft
Japanese casualties
0 personnel; 5 submarines
Front pages.
3 outlets carried the story: The New York Times, The Times (London), Associated Press Radio Broadcast.
Media coverage
What the world was reading.
5 pieces, ranked by how much they shaped the discourse.
The New York Times
Newspaper · United States · Dec 8, 1941
"Japan Wars on U.S. and Britain; Makes Sudden Attack on Hawaii; Heavy Fighting Reported"
The Empire of Japan launched a surprise military attack against the United States and Great Britain early Sunday, striking without warning at American naval and military installations in Hawaii and at British possessions in Southeast Asia.
- Dec 8, 1941
The Times (London)
Newspaper · United Kingdom
"Japan's Sudden Onslaught - Attack on United States"
Synthesized from period reporting - Japan has launched simultaneous attacks on American territory and British possessions across the Pacific, striking at Pearl Harbor and British holdings in Malaya and Hong Kong.
- Dec 7, 1941
Associated Press Radio Broadcast
Radio · United States
"Flash - Japan Attacks Pearl Harbor; Casualties Heavy"
Synthesized from period reporting - Reports indicate Japanese aircraft have struck the U.S. naval base at Pearl Harbor, Hawaii, with significant casualties reported among military personnel and ships in the harbor.
- Dec 8, 1941
The Chicago Tribune
Newspaper · United States
"U.S. at War - Japan Strikes in Pacific"
In a dawn assault that caught American defenders unprepared, Japanese warplanes descended on Pearl Harbor in what military officials are calling one of the most devastating surprise attacks in naval history.
- Dec 8, 1941
The Sydney Morning Herald
Newspaper · Australia
"Japan Declares War on America - Pacific Bases Attacked"
Synthesized from period reporting - Japan's military forces have launched coordinated strikes across the Pacific theater, attacking American positions at Pearl Harbor and advancing on British colonial territories in Southeast Asia.
Captured in time.
Captured before it changed
The web as it looked, the day it happened.
Wayback Machine snapshots of the pages people actually loaded that day. Click any card to open the archive at full size.
Sources & citations.
Sources
Where this came from.
Every claim on this page traces to a public, license-clean source. We don't asterisk well.
Wikipedia
1 source- 1.Pearl Harbor Attack
en.wikipedia.org