L'Equazione del Tempo
Costantino Sigismondi

TL;DR
This paper explains the equation of time and how Earth's orbital mechanics affect solar timings, including sunrise, sunset, and local noon variations throughout the year.
Contribution
It provides a detailed analysis of the factors influencing the equation of time and their impact on solar event timings, with specific explanations for July's consistent sunset time.
Findings
Sunset time remains constant in July despite decreasing daylight.
The length of the solar day varies with Earth's orbital position and declination.
Local noon shifts are influenced by Earth's orbital eccentricity and axial tilt.
Abstract
The equation of time is fundamental for calculating the rising and setting times of the Sun. The concepts of sidereal and solar day and locak noon, we show how the length of the day depends on solar declination and Earth's orbit position, and also their influence on the local noon shift. In particular we show why in the month of July the setting time is rather constant, while the daylight reduces constantly.
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Taxonomy
TopicsSolar and Space Plasma Dynamics · Geophysics and Gravity Measurements · Historical Astronomy and Related Studies
