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Year

The interval required for the earth to complete one revolution around the sun. A sidereal year, which is the time it takes for the earth to make one absolute revolution around the sun, is 365 days, 6 hours, 9 minutes and 9.5 seconds. The calendar year begins at 12 o'clock midnight local time on the night of December 31st-January 1st. Currently, the Gregorian calendar of 365 days is used, with 366 days every four years, a leap year. The tropical year, also called the mean solar year, is dependent on the seasons. It is the interval between two consecutive returns of the sun to the vernal equinox. In 1900, that took 365 days, 5 hours, 48 minutes, and 46 seconds, and it is decreasing at the rate of 0.53 second per century. This decrease is due to the slow precession of the Earth's axis of rotation.

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Severe weather warning cancelled for South Australia as wild weather eases

22:08 EST

A severe weather warning for parts of South Australia has been cancelled after a day of wet and windy weather.

Wild weather causing havoc over SA

17:13 EST

Southern parts of South Australia are battling the wind and rain.

Heavy rain continues across South Australia, further flooding unlikely

16:44 EST

Adelaide is poised to smash its May rainfall average as the city braces for further heavy rain.