More Information. As the Earth travels around the Sun in its orbit, the north-south position of the Sun changes over the course of the year due to the changing orientation of the Earth's tilted rotation axes.
The dates of maximum tilt of the Earth's equator correspond to the Summer Solstice and Winter Solstice , and the dates of zero tilt to the Spring or Vernal Equinox and Autumnal Equinox.
The first day of winter the winter solstice is the shortest day of the year and the first day of summer the summer solstice is the longest day of the year. During the summer months, the further north you go, the arc of solar travel between sunrise and sunset lengthens and the amount of daylight increases. For regions north of the Arctic Circle at a latitude of It will approach the horizon at midnight, but it will not quite touch it and the Sun will shine all day long.
At the latitude of the Arctic Circle, the first day of summer is the only hour day of total daylight. Further north toward the Pole, the number of hour periods between sunrise and sunset increases. The ultimate long-day occurs at the North Pole where the Sun rises with the Vernal Equinox and finally sets again days later with the Autumnal Equinox.
Likewise, during the winter months, for regions north of the Arctic Circle, the sun will set for for at least one full day before rising again. Further north toward the Pole, the number of hour periods before the sun rises again increases. At the North Pole, the sun will not rise again until the Vernal Equinox. Notes: Time displayed is local time. Time on i-cal event is provided in UTC format and is formatted to your location based on your computer time zone setting.
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