Wikipedia:Picture of the day/On the main pages

This page shows the pictures of the day for yesterday, today, and tomorrow. If multiple pictures are featured as a random selection, all of the options are shown here. If the dates shown below are not current, please null edit the page.

Yesterday (2024-06-09)

Euchloe penia, commonly known as the eastern greenish black-tip, is a butterfly in the family Pieridae. It is found in North Macedonia, Bulgaria, Greece, Turkey, Lebanon, Syria, and northern Iraq. The habitat consists of dry and warm rocky areas. Adults are a bright greenish off-yellow, with a wingspan of 32 to 36 millimetres (1.3 to 1.4 inches). There are two generations per year, with adults on the wing in April and from June to July. The larvae feed on plants of the genus Matthiola. This E. penia butterfly perching on a flower was photographed in Pletvar, North Macedonia.

Photograph credit: Charles J. Sharp

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Today (2024-06-10)

An oblique shock is a shock wave that, unlike a normal shock, is inclined with respect to the direction of incoming air. It occurs when a supersonic flow encounters a corner that effectively turns the flow into itself and compresses. This photograph shows an oblique shock at the nose of a Northrop T-38 Talon aircraft, made visible through Schlieren photography.

Photograph credit: NASA & US Air Force (J.T. Heineck, Ed Schairer, Maj. Jonathan Orso, Maj. Jeremy Vanderhal)

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Tomorrow (2024-06-11)

Zhou Fang was a Chinese painter during the Tang dynasty, living in the capital of Chang'an (modern Xi'an) during the 8th century. He came from a noble background and this was reflected in his works. He personally painted for the emperor and the themes of his artwork covered religious subjects and everyday life. This ink-and-color-on-silk painting, titled Court Ladies Playing Double-sixes, measures 30.5 cm × 69.1 cm (12.0 in × 27.2 in) and depicts members of the emperor's household playing the board game liubo. It now hangs in the Freer Gallery of Art in Washington, D.C.

Painting credit: Zhou Fang

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