Definition of solar day
: the interval between transits of the apparent or mean sun across the meridian at any place
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Recent Examples of solar day from the Web
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The length of a solar day, measured by the time between the sun’s passage of any particular point in the sky, is rarely 24 hours precisely.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'solar day.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of solar day
1751
Learn More about solar day
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Britannica.com: Encyclopedia article about solar day
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