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  2. Uttarayana - Wikipedia

    en.wikipedia.org/wiki/Uttarayana

    The season occurs based on tropical sun (without ayanamsha). The Earth revolves around Sun with a tilt of 23.44 degrees. When the tilt is facing the Sun it is defined as summer and when the tilt is away from the Sun it is called winter. That is the reason when there is summer north of the equator, it will be winter south of the equator. [9]

  3. Earth Has Tilted 31.5 Inches. That Shouldn't Happen. - AOL

    www.aol.com/earth-tilted-31-5-inches-164500730.html

    The study included data from 1993 through 2010, and showed that the pumping of as much as 2,150 gigatons of groundwater has caused a change in the Earth’s tilt of roughly 31.5 inches. The ...

  4. Effect of Sun angle on climate - Wikipedia

    en.wikipedia.org/wiki/Effect_of_Sun_angle_on_climate

    Therefore, greater tilt means a lower minimum for the same maximum: less total annual surface insolation at the equator. At the poles (90° latitude), on the equinoxes and during polar night, the sun angle is always 0° or less no matter the axial tilt, while on the summer solstice, the maximum angle is equal to the tilt. Therefore, greater ...

  5. Milankovitch cycles - Wikipedia

    en.wikipedia.org/wiki/Milankovitch_cycles

    Season durations [13] Year Northern hemisphere Southern hemisphere Date Season duration 2005 Winter solstice: Summer solstice 21 December 2005 18:35 88.99 days 2006 Spring equinox: Autumn equinox 20 March 2006 18:26 92.75 days 2006 Summer solstice Winter solstice 21 June 2006 12:26 93.65 days 2006 Autumn equinox Spring equinox 23 September 2006 ...

  6. Earth tilted 31.5 inches, a study finds. So whose fault is ...

    www.aol.com/news/earths-axis-tilted-31-5...

    The Earth's tilt is the reason for the seasons, stated NASA. So spring, summer, winter and fall would not exist without it. "Throughout the year, different parts of Earth receive the Sun's most ...

  7. Winter solstice - Wikipedia

    en.wikipedia.org/wiki/Winter_solstice

    The winter solstice occurs during the hemisphere's winter. In the Northern Hemisphere, this is the December solstice (December 21 or 22) and in the Southern Hemisphere, this is the June solstice (June 20 or 21). Although the winter solstice itself lasts only a moment, the term also refers to the day on which it occurs.

  8. Axial precession - Wikipedia

    en.wikipedia.org/wiki/Axial_precession

    The images at right attempt to explain the relation between the precession of the Earth's axis and the shift in the equinoxes. These images show the position of the Earth's axis on the celestial sphere, a fictitious sphere which places the stars according to their position as seen from Earth, regardless of their actual distance. The first image ...

  9. Earth - Wikipedia

    en.wikipedia.org/wiki/Earth

    Earth's axial tilt causing different angles of seasonal illumination at different orbital positions around the Sun. The axial tilt of Earth is approximately 23.439281° [2] with the axis of the plane of the Earth's orbit by definition pointing always towards the Celestial Poles. Due to Earth's axial tilt, the amount of sunlight reaching any ...