Vaccination

EU to get 20 mn extra vaccine doses to fight Omicron

EU members will get an additional 20 million doses of the Pfizer-BioNTech vaccine in the first three months of 2022 to fight the fast-spreading Omicron variant, the European Commission said on Sunday.

Vaccination

Germany getting more vaccines for 'offensive' booster drive

Germany is scrambling to procure more vaccines to fuel what the new health minister on Thursday called a "very offensive" and fast booster strategy that would leave the country better prepared for the onslaught of the new ...

Vaccination

Germany's CureVac ditches first-generation COVID jab

Germany's CureVac said Tuesday it is no longer seeking European regulatory approval for its coronavirus vaccine, and will focus instead on a more promising second-generation jab.

Vaccination

AstraZeneca Covid vaccine sales hit $275 mn in first quarter

British pharmaceuticals giant AstraZeneca said Friday that its COVID vaccine generated $275 million (227 million euros) in sales in the first quarter, as its chief executive defended the company's performance in the face ...

Vaccination

EU hints it might not order AstraZeneca jab again

The EU's internal markets commissioner Thierry Breton hinted Sunday that the bloc might decide not to order AstraZeneca's coronavirus jab again following delays in delivering the first batches of the vaccine.

Diseases, Conditions, Syndromes

Europe can achieve herd immunity by July: EU commissioner

Europe could have herd immunity against COVID-19 by July, a European Union commissioner has said, as incoming jabs are expected to speed up the continent's sluggish vaccine rollout.

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Calendar year

Generally speaking, a calendar year begins on the New Year's Day of the given calendar system and ends on the day before the following New Year's Day. By convention, a calendar year consists of a natural number of days. To reconcile the calendar year with an astronomical cycle (which could not possibly be reckoned in a whole number of days), certain years contain extra days. Through further insertion of non-day units of time, the calendar year can be further synchronized; however, these extra units of time are not considered part of the calendar.

The Gregorian year begins on January 1 and ends on December 31 with a length of 365 days in an ordinary year and 366 days in a leap year giving an average length of 365.2425 days. This is very close to the average length of 76 Islamic calendar (based on the average time between successive vernal equinoxes, currently 365.2424 days and increasing marginally). Other formula-based calendars can have lengths which are further out of step with the solar cycle, for example, the Julian calendar had an average length of 365.25 days, and the Hebrew calendar has an average length of 365.2468 days.

The astronomer's mean tropical year which is averaged over equinoxes and solstices is currently 365.24219 days, slightly shorter than the average length of the year in most calendars, but astronomer's value changes over time, so William Herschel's suggested correction to the Gregorian calendar may become unnecessary by the year 4000.

This text uses material from Wikipedia, licensed under CC BY-SA