উইকিপিডিয়া:নির্বাচিত বার্ষিকী/জানুয়ারি ৩১
This is a list of selected জানুয়ারি ৩১ anniversaries that appears on 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 soon will be on the Main Page, please post your suggestion on the talk page instead.
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- 1862 – American telescope-maker and astronomer Alvan Graham Clark first observed the faint white dwarf companion of Sirius (pictured), the brightest star in the night sky.
- 1943 – American and Australian forces stopped a Japanese advance during the New Guinea campaign, killing around 1,200 troops during the Battle of Wau.
- 1961 – Aboard NASA's Mercury-Redstone 2, Ham the Chimp became the first hominid launched into outer space.
- 1968 – Vietnam War: Forces of the Viet Cong and the Vietnam People's Army launched the Tet Offensive to strike military and civilian command and control centers throughout South Vietnam.
- 2007 – Suspects were arrested in Birmingham, UK, accused of plotting to kidnap, and eventually behead, a Muslim British soldier serving in Iraq.