Wikipedia:Selected anniversaries/April 13
This is a list of selected April 13 anniversaries that appear in the "On this day" section of the Main Page. To suggest a new item, in most cases, you can be bold and edit this page. Please read the selected anniversaries guidelines before making your edit. However, if your addition might be controversial or on a day that is or will soon be on the Main Page, please post your suggestion on the talk page instead.
Please note that the events listed on the Main Page are chosen based more on relative article quality and to maintain a mix of topics, not based solely on how important or significant their subjects are. Only four to five events are posted at a time and thus not everything that is "most important and significant" can be listed. In addition, an event is generally not posted this year if it is also the subject of the scheduled featured article or picture of the day.
To report an error when this appears on the Main Page, see Main Page errors. Please remember that this list defers to the supporting articles, so it is best to achieve consensus and make any necessary changes there first.
April 13: Easter Monday (Western Christianity, 2009); Thai New Year's Day
- 1598 – King Henry IV of France (pictured) issued the Edict of Nantes, allowing freedom of religion to the Huguenots.
- 1873 – In the wake of a contested election for local political offices in Colfax, Louisiana, USA, armed white supremacists overpowered freedmen and the African American state militia trying to control the parish courthouse, killing over 100 of them.
- 1919 – British Indian Army troops opened fire on a peaceful gathering at the Jallianwala Bagh in Amritsar, Punjab, India, killing hundreds of unarmed men, women and children.
- 1943 – World War II: Germany announced the discovery of a mass grave of Polish prisoners-of-war executed by Soviet forces in the Katyn Forest Massacre, driving a wedge among the Allies, particularly the Polish government-in-exile in London and the Soviet Union.
- 1984 – Indian forces launched a preemptive attack on the disputed Siachen Glacier region of Kashmir, triggering a military conflict with Pakistan.