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The first measure indicates the general sunniness of a location compared with other places, while the latter allows for comparison of sunshine in various seasons in the same location. [1] Another often-used measure is percentage ratio of recorded bright sunshine duration and daylight duration in the observed period.
Equinox. A solar equinox is a moment in time when the Sun crosses the Earth's equator, which is to say, appears directly above the equator, rather than north or south of the equator. On the day of the equinox, the Sun appears to rise "due east" and set "due west". This occurs twice each year, around 20 March and 23 September.
The poles are still cold during their respective summers, despite seeing 24 hours of daylight for six months, while the Equator remains warm throughout the year, with only 12 hours of daylight per day. Although the daytime length at the Equator remains 12 hours in all seasons, the duration at all other latitudes varies with the seasons.
A season is a division of the year [ 1] based on changes in weather, ecology, and the number of daylight hours in a given region. On Earth, seasons are the result of the axial parallelism of Earth's tilted orbit around the Sun. [ 2][ 3][ 4] In temperate and polar regions, the seasons are marked by changes in the intensity of sunlight that ...
When does daylight saving time end? In 2024, daylight saving time ends on Sunday, Nov. 3, at 2 a.m. local time. The day will fall back one hour to 1 a.m.
Summer solstice. The summer solstice or estival solstice[ i] occurs when one of Earth 's poles has its maximum tilt toward the Sun. It happens twice yearly, once in each hemisphere ( Northern and Southern ). For that hemisphere, the summer solstice is the day with the longest period of daylight and shortest night of the year, when the Sun is at ...
The winter solstice, also called the hibernal solstice, occurs when either of Earth 's poles reaches its maximum tilt away from the Sun. This happens twice yearly, once in each hemisphere ( Northern and Southern ). For that hemisphere, the winter solstice is the day with the shortest period of daylight and longest night of the year, and when ...
But residents of northerly Helsinki, Finland, will get a 3:54 a.m. sunrise and almost 19 hours of daylight. Even the night doesn’t get that dark. Even the night doesn’t get that dark.