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On This Day

12

September

12 September

More on this day

  • 2015
    11 years ago
    Living memory

    An explosion involving illegally stored mining detonators in Petlawad, India, killed 104 people and injured more than 150 others.

    Recent enough to sit in living memory - a date many people can still place in their own lifetime.

  • 2008
    18 years ago
    Living memory

    A Metrolink train collided head-on with a freight train in Los Angeles, California, resulting in 25 deaths and 135 injuries; the Metrolink driver had passed through a red signal, having likely been distracted by text messaging.

    Recent enough to sit in living memory - a date many people can still place in their own lifetime.

  • 2003
    23 years ago
    Living memory

    Typhoon Maemi, the strongest recorded typhoon to strike South Korea, made landfall near Busan.

    Recent enough to sit in living memory - a date many people can still place in their own lifetime.

  • 2003
    23 years ago
    Living memory

    The first public release of Steam, a distribution service for computer games, was made available for download.

    A first in knowledge or technology: after this, the possible set of tools was not the same.

  • 1995
    31 years ago
    Living memory

    Hurricane Ismael formed off the southwest coast of Mexico; it went on to kill over a hundred people in the country.

    A disaster date - kept because communities still measure risk, grief, and rebuilding from it.

  • 1992
    34 years ago
    Living memory

    Aboard Space Shuttle Endeavour, American Mae Jemison became the first Black woman to travel to space.

    A first in knowledge or technology: after this, the possible set of tools was not the same.

  • 1983
    43 years ago
    Living memory

    The clandestine Boricua Popular Army staged a bank robbery in West Hartford, Connecticut, making off with $7 million in the largest cash theft in U.S. history at the time.

    Recent enough to sit in living memory - a date many people can still place in their own lifetime.

  • 1977
    49 years ago
    Living memory

    South African anti-apartheid activist Steve Biko died after being beaten in police custody in Port Elizabeth.

    Recent enough to sit in living memory - a date many people can still place in their own lifetime.

  • 1962
    64 years ago
    Living memory

    In a speech at Rice Stadium in Houston, U.S. president John F. Kennedy reiterated an aspiration to land a man on the Moon before 1970 (video featured).

    Recent enough to sit in living memory - a date many people can still place in their own lifetime.

  • 1952
    74 years ago
    Living memory

    Three boys in Flatwoods, West Virginia, U.S., reported seeing a ten-foot-tall (3 m) monster in the woods while investigating a UFO.

    Recent enough to sit in living memory - a date many people can still place in their own lifetime.

  • 1948
    78 years ago
    Living memory

    The People's Liberation Army launched the Liaoshen campaign, the first of the three major military campaigns during the late stage of the Chinese Civil War.

    Conflict on this date is why later maps, borders, and memories still argue about it.

  • 1942
    84 years ago
    Living memory

    RMS Laconia was sunk by a U-boat off the coast of West Africa, which then attempted to rescue the passengers as it was acting under the old prize rules.

    A modern-age event whose consequences were still unfolding in living memory.

  • 1942
    84 years ago
    Living memory

    World War II: The Imperial Japanese Army began the Battle of Edson's Ridge in an effort to retake Henderson Field on Guadalcanal in the Solomon Islands from the Allies.

    Conflict on this date is why later maps, borders, and memories still argue about it.

  • 1933
    93 years ago
    Living memory

    Hungarian-American physicist Leo Szilard conceived of the idea of the nuclear chain reaction while waiting for a traffic light in Bloomsbury, London.

    A modern-age event whose consequences were still unfolding in living memory.

  • 1928
    98 years ago
    Living memory

    The Okeechobee hurricane first struck the island of Guadeloupe; eventually it reached the United States and caused over 4,000 deaths overall.

    A first in knowledge or technology: after this, the possible set of tools was not the same.

  • 1910
    116 years ago

    Gustav Mahler's Symphony No. 8, one of the largest-scale choral works in the classical concert repertoire and popularly known as the "Symphony of a Thousand", was first performed in Munich (1916 performers pictured).

    A first in knowledge or technology: after this, the possible set of tools was not the same.

  • 1885
    141 years ago

    The Scottish Cup match between Arbroath and Bon Accord ended 36–0, which is still a world record for an unrigged professional association football match.

    A modern-age event whose consequences were still unfolding in living memory.

  • 1846
    180 years ago

    The English poets Robert Browning and Elizabeth Barrett Browning (both pictured) married in secret to avoid their disapproving families before moving to Italy.

    A modern-age event whose consequences were still unfolding in living memory.

  • 1309
    717 years ago

    Reconquista: Castilian forces captured Gibraltar from the Emirate of Granada.

    A medieval moment that still explains later maps, faiths, and power.

  • 379
    1647 years ago

    Yax Nuun Ahiin I took the throne as the ruler (ajaw) of the Mayan city of Tikal.

    An ancient turning point still used to mark how early civilizations changed.

Historical summaries from Wikipedia, available under CC BY-SA 4.0.

On This Day

A time capsule for any date

Open any month and day to see a featured story with how many years ago it was, filter the rest by century, play guess-the-year, save your day, share a moment card, or run a 60-second tour. Summaries come from Wikipedia under CC BY-SA - GClocks adds the time context.

How it works

  1. 01

    Pick a date

    Use Previous / Next, Today, or the date picker. The page URL stays /on-this-day/; the selected date lives in the hash (#m=&d=).

  2. 02

    Open the capsule

    The featured moment shows years ago, era, and a short "why it mattered" note. The rest of that day's stories sit under the fold, with a Wikipedia thumbnail when one exists.

  3. 03

    Play, save, and share

    Guess the year, run a 60-second tour, filter by century, save the date as your day, or share a moment card. Everything stays on this device - no account.

Why use this instead of Wikipedia's list?

Wikipedia's On This Day feed is a long list. GClocks turns the same CC BY-SA summaries into a time capsule: relative time, a century scrubber, a daily year quiz, a 60-second tour, a saveable personal date, and a shareable card - then links you back to the original article when you want the full story.

Everything on this day

  • Featured time capsule

    One story up front with years-ago, era, living-memory, and a Wikipedia thumbnail when one exists.

  • Century filter

    Scrub 2000s, 1900s, and earlier without changing the date. Show all centuries to restore the full list.

  • Guess the year

    A four-choice quiz from that day's entries, with a local streak saved in your browser.

  • 60-second tour

    Auto-play up to three stories for the selected date, about 20 seconds each. Pause, skip, or close anytime.

  • Save as my day

    Keep a birthday or anniversary in the browser, then jump back, open a countdown, or open the matching calendar week.

  • Moment card

    A 1200×630 image of the featured story. Supporting phones open the system share sheet; otherwise it downloads a PNG.

Frequently asked questions

Event, birth, death, and holiday summaries come from Wikipedia’s On This Day feed and are shown under the CC BY-SA license. GClocks adds time context (years ago, era, century). Open a linked Wikipedia article when you need the full story.

Yes. Use Previous / Next, Today, or the date picker. The page URL stays /on-this-day/; the selected date is kept in the hash (#m=&d=).

Some language editions do not publish an On This Day feed for every date. When that happens we fall back to the English summaries.

A short GClocks note by era and type (event, birth, death, holiday) - not an AI rewrite of the Wikipedia article. It is a time-context caption, not extra historical research.

Each date offers a four-choice quiz from that day’s entries. Your first answer of the day counts toward a local streak (saved in your browser). Try another is practice only and does not change the streak.

A short auto-play of up to three stories for the selected date (about 20 seconds each). You can pause, skip, or close it. It is a recap, not a replacement for the full list.

It stores a date (birthday or anniversary) in your browser. You can jump back to it, open a countdown to the next time that date occurs, or open the matching calendar week - all on this device, with no account.

Share moment card builds a 1200×630 image of the featured story. On supporting phones it uses the system share sheet; otherwise it downloads a PNG. The page link still uses #m=&d= so the same date opens for anyone.

The chips under the hero (All, 2000s, 1900s, …) hide list items outside that century. They do not change the date. Show all centuries restores the full list for the active tab.