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Sunlit Design > The Sun API > Documentation > Finding Annual Solar Features


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Finding Annual Solar Features

The times of occurrence of these annually occurring features may be found using the sdxFindAnnFeatx function:

Every year, the following Solar features (events) occur:

Maximum Equation of Time in May
Maximum Equation of Time in November
Minimum Equation of Time in February
Minimum Equation of Time in July
Zero Equation of Time in April
Zero Equation of Time in June
Zero Equation of Time in September
Zero Equation of Time in December
Maximum Declination
Minimum Declination
Zero Declination in March
Zero Declination in September
Crossing point of Analemma in April
Crossing point of Analemma in August
Solstice in June
Solstice in December
Equinox in March
Equinox in September