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On the Tropics of Cancer and Capricorn, these events coincide with the solstices, whereas in the intermediate belt each of the two phenomena occurs twice a year on dates that vary as a function of geographic latitude. The Sun reaches the zenith and the nadir (or anti-zenith) exclusively in tropical latitudes.
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Slovenian Academy of Sciences and Arts (ZRC SAZU)Īmong the astronomical phenomena occurring only in certain parts of the globe, the Sun's zenith and nadir passages stand out prominently, exemplifying the extent to which geographic latitude determines the significance attributed to particular celestial events and influences their role in cosmological concepts.
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