How long ago
Time since the attack on Pearl Harbor
On December 7, 1941, Japan attacked the US Pacific Fleet at Pearl Harbor, Hawaii. The next day the United States declared war. Measure elapsed time and scan the facts below.
Time elapsed
…
Anchor date: Sunday, December 7, 1941 at 1:30 AM GMT-10:30 · zone hint Pacific/Honolulu
Pearl Harbor was 84 years, 7 months, and 26 days ago (30,919 total days) as of today — anchor Sunday, December 7, 1941.
Quick facts
- Date
- December 7, 1941
- Location
- Pearl Harbor, Oahu, Hawaii Territory
- US war declaration
- December 8, 1941
- Famous phrase
- “A date which will live in infamy” (FDR)
- Battleship Arizona
- Sank; memorial site today
How we calculate
Elapsed time is the difference between now and the anchor date below, broken into calendar years, months, and days, plus a live hours/minutes/seconds clock.
Anchor ISO: 1941-12-07
· zone hint: Pacific/Honolulu
Timeline
- 1941-12-07 Surprise attack on Pearl Harbor.
- 1941-12-08 US declares war on Japan.
- 1941-12-11 Germany and Italy declare war on the US.
- 1945-09-02 Japan surrenders; WWII ends.
Related dates
Places on US5
Tools & time
FAQ
What time of day was the attack?
The first wave struck early morning local Hawaiian time (around 7:55 a.m.). This page anchors on the calendar date December 7, 1941.
Was Hawaii a US state yet?
No. Hawaii was a US territory in 1941 and became a state in 1959. You can explore Hawaii place pages on US5 for modern ZIP and city context.
How does Pearl Harbor relate to D-Day?
Pearl Harbor brought the US into WWII; D-Day (1944) was a later Allied offensive in Europe. Both are major milestones on the same war timeline.
Where is the Pearl Harbor National Memorial?
It is on Oahu, Hawaii. For local navigation on US5, start from Hawaii state and city pages or ZIP lookup.