The Longest Day of 2017
Jun 23, 2017 11:31:07 #
Jun 23, 2017 12:21:56 #
Jun 23, 2017 13:08:21 #
Jun 23, 2017 18:12:41 #
"Solstice Dates Vary
Even though most people consider June 21 as the date of the June Solstice, it can happen anytime between June 20 and June 22, depending on which time zone you're in. June 22 Solstices are rare - the last June 22 Solstice in UTC time took place in 1975 and there won't be another one until 2203.
The varying dates of the solstice are mainly due to the calendar system – most western countries use the Gregorian calendar which has 365 days in a normal year and 366 days in a Leap Year.
A tropical year is the time it takes the Earth to orbit once around the Sun. It is around 365.242199 days long, but varies slightly from year to year because of the influence of other planets. The exact orbital and daily rotational motion of the Earth, such as the “wobble” in the Earth's axis (precession of the equinoxes), also contributes to the changing solstice dates."
Even though most people consider June 21 as the date of the June Solstice, it can happen anytime between June 20 and June 22, depending on which time zone you're in. June 22 Solstices are rare - the last June 22 Solstice in UTC time took place in 1975 and there won't be another one until 2203.
The varying dates of the solstice are mainly due to the calendar system – most western countries use the Gregorian calendar which has 365 days in a normal year and 366 days in a Leap Year.
A tropical year is the time it takes the Earth to orbit once around the Sun. It is around 365.242199 days long, but varies slightly from year to year because of the influence of other planets. The exact orbital and daily rotational motion of the Earth, such as the “wobble” in the Earth's axis (precession of the equinoxes), also contributes to the changing solstice dates."
Jun 25, 2017 00:34:40 #
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