Hepatitis B virus, abbreviated HBV, is a species of the genus Orthohepadnavirus, which is likewise a part of the Hepadnaviridae family of viruses. This virus causes the disease hepatitis B.he early evolution of the Hepatitis B, like that of all viruses, is difficult to establish. The divergence of orthohepadnavirus and avihepadnavirus occurred ~125,000 years ago (95% interval 78,297â313,500). Both the Avihepadnavirus and Orthohepadna viruses began to diversify about 25,000 years ago.
Daylight Saving Time (DST) was first used in Germany in 1916. Clock in Prague, the Czech Republic. Many countries in Europe change their clocks to observe daylight saving time on the last Sunday of March each year. Pictured above is a clock in Prague, the Czech Republic's capital city.
Daylight saving. Daylight Saving Time (DST) is the practice of advancing clocks one hour during the warmer months of the year. In Australia, Daylight saving is observed in New South Wales, Victoria, South Australia, Tasmania, and the Australian Capital Territory. Daylight saving is not observed in Queensland, the Northern Territory or Western Australia. Daylight Saving Time begins at 2am on the first Sunday in October, when clocks are put forward one hour. It ends at 2am (which is 3am Daylight Saving Time) on the first Sunday in April, when clocks are put back one hour.