Past dates and years
How long ago
Live elapsed-time clocks for major historical dates and curated years — with quick facts, timelines, sources, and bridges into US5 Places and Tools. Not the same as USA time now.
Need days until a holiday: Open Countdown →
Featured
WWII
Time since World War II ended
29,553 days ago · Sunday, September 2, 1945
D-Day
Time since D-Day (June 6, 1944)
30,006 days ago · Tuesday, June 6, 1944
Pearl Harbor
Time since the attack on Pearl Harbor
30,918 days ago · Sunday, December 7, 1941
Moon landing
Time since the Apollo 11 moon landing
20,831 days ago · Sunday, July 20, 1969
9/11
Time since September 11, 2001
9,090 days ago · Tuesday, September 11, 2001
More dates
Featured years
Curated year clocks (always from January 1). Includes year 1 AD. Not every calendar year — only pages that meet the richness bar.
Year 1 AD
Time since 1 AD
739,828 days ago · Monday, January 1, 1
1776
Time since 1776
91,523 days ago · Monday, January 1, 1776
1945
Time since 1945
29,797 days ago · Monday, January 1, 1945
1969
Time since 1969
21,031 days ago · Wednesday, January 1, 1969
2000
Time since 2000
9,709 days ago · Saturday, January 1, 2000
2001
Time since 2001
9,343 days ago · Monday, January 1, 2001
2020
Time since 2020
2,404 days ago · Wednesday, January 1, 2020
All curated years
Methodology
Event pages pick a single day (or UTC timestamp). Year pages pick January 1 of that year. We show calendar Y/M/D plus total days and a ticking clock. Disputed endings are called out in FAQ and sources — we do not invent casualty statistics.
Looking for current local time: use /time. For upcoming holidays, use /countdown.
FAQ
How is this different from US5 Time?
/time shows current clocks and zones across the USA. How long ago answers “how much time has passed since a historical date or year” with curated facts — it is not nested under Time.
Event pages vs year pages?
Event pages use a specific day (e.g. Sep 2, 1945 for WWII). Year pages always anchor on January 1 of that year. Example: /how-long-ago/2020 vs /how-long-ago/911 (the 9/11 entity).
Do you cover every year in history?
No. Only curated years that meet the richness bar (facts, timeline, FAQ, sources). Year 1 AD is included; year 911 AD is not, because /how-long-ago/911 is reserved for September 11.
Looking for days until a holiday instead?
Use Countdown for Thanksgiving, July 4, Christmas, and other future civic dates.