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A solstice is the time when the Sun reaches its most northerly or southerly excursion relative to ... Equinoxes and Solstices Calculator (1600 to 2400) "Earth's ...
Therefore, δ ☉ = +23.44° at the northern summer solstice and δ ☉ = −23.44° at the southern summer solstice. At the moment of each equinox, the center of the Sun appears to pass through the celestial equator, and δ ☉ is 0°. The Sun's declination at any given moment is calculated by:
C is the Equation of the center value needed to calculate lambda (see next equation). 1.9148 is the coefficient of the Equation of the Center for the planet the observer is on (in this case, Earth) Ecliptic longitude
The winter solstice marks the first day of winter, ushering in the colder weather and holiday season. But daylight saving isn't to blame; the Earth's tilt is. But daylight saving isn't to blame ...
The summer solstice welcomes the first official day of summer. Find out about the science of the solstice and well as its pagan roots and celebrations of fertility.
Winter solstice is the shortest day of year, longest night of the year and the official first day of winter in the Northern Hemisphere. Find out about the science and traditions behind the solstice.
where D is the date, counted in days starting at 1 on 1 January (i.e. the days part of the ordinal date in the year). 9 is the approximate number of days from the December solstice to 31 December. A is the angle the Earth would move on its orbit at its average speed from the December solstice to date D.
The winter solstice marks the shortest day of the year, with just 8 hours and 46 minutes of daylight. Fun things to do during the winter solstice. During the solstice, it could be cold or snowy ...