A study published in Scientific Reports proposes that the sky in Vincent van Gogh’s The Starry Night resembles the predawn sky over Saint-Rémy-de-Provence around July 22, 1889. The researchers point to the arrangement of a waning crescent moon, Venus and the Hyades star cluster. Their finding offers a possible real-sky reference for the painting—not a confirmed date for when van Gogh completed it.
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Why the researchers point to July
The team’s proposed match brings together three features visible in the painting: a crescent moon, a bright planet and a group of stars. Around July 22, 1889, the waning crescent moon, Venus and the Hyades in Taurus appeared close together before dawn over Saint-Rémy, according to the study’s summaries.
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The researchers identify the painting’s central star pattern as the V-shaped Hyades cluster in Taurus, rather than Aries, as earlier interpretations proposed. They used Procrustes analysis, a method for comparing the shape of two sets of points after aligning them, to assess the resemblance between the painted stars and the cluster.
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How this challenges the June dating
The traditional June chronology has been associated with a letter van Gogh wrote to his brother Theo around June 18. But the moon phase around that time has been reported as a poor match for the slender crescent shown in the painting. The July configuration offers a closer match to that feature, as well as to the proposed star pattern.
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The research team combined astronomical analysis with historical weather records and van Gogh’s letters. Lead author Elijah Jeong-hyun Kim is identified in reporting as SLLAB’s CEO and a doctoral candidate at Kyung Hee University’s School of Space Research.
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What the proposed date does—and doesn’t—mean
The study’s date refers to a possible sky depicted or used as a reference; it does not by itself show that van Gogh painted The Starry Night on July 22. Matching celestial features can support an interpretation of the scene, but it cannot alone establish when the artist made the canvas or whether he combined observations from different times.
The proposal also has not settled the art-historical chronology. Physicist Jose Luis Aragon, who was not part of the study, described the July date as an intriguing hypothesis rather than a settled answer.
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The cautious takeaway: the July 22 sky is a plausible astronomical match, and the Hyades interpretation offers a new way to read the painting’s stars. Whether that changes the accepted date of The Starry Night remains an open question.