Thursday, 20 June 2013

The Winter Solstice will be tommorrow morning

This will be for South Africa.

Information was supplied by

The June Solstice

An example of what happens during the June solstice. Illustration is not to scale

June 21 2013 at 5.04 AM UTC

Local times for solstices worldwide ▸

The June solstice is known as the summer solstice in the northern hemisphere and the winter solstice the southern hemisphere. The date varies between June 20 and June 22, depending on the year.

Varying dates

In the Gregorian calendar the June solstice dates vary. For example, it was on June 20 in 2012 and falls on June 21 at 5:04 AM UTC in 2013. A June 22 solstice will not occur until June 22, 2203. The last time there was a June 22 solstice, was in 1971.

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 year, or 366 days in a leap year. As for the tropical year, it is approximately 365.242199 days, but varies from year to year because of the influence of other planets. A tropical year is the length of time that the sun takes to return to the same position in the cycle of seasons, as seen from Earth. The exact orbital and daily rotational motion of the Earth, such as the “wobble” in the Earth's axis (precession), also contributes to the changing solstice dates.

How simple!