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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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Frosty Morning for Eastern Australia

11:03 EST

Widespread frost and record breaking cold has impacted much of the east.

Coalcliff: Teenagers snapchat video of fire while searching burning home for survivors

15:14 EST

Three houses have burnt down after a house fire spread to two neighbouring homes, fanned by strong winds on Lawrence Hargrave Drive in Coalcliff, 25 kilometres north of Wollongong, last night.

Last significant rain for weeks in the nation's southwest

14:25 EST

The rain has tumbled down across southwestern parts of Australia during the past seven weeks, but that trend will finish today.