Business

Nokia sees 'challenging' 2024 after profits plunge

Finnish telecommunications equipment maker Nokia warned Thursday that it expects another tough economic environment in the first half of this year after its net profit sank in 2023.

Business

Delta reports profit jump but lowers earnings forecast

Delta Air Lines saw its profits more than double in the fourth quarter last year, helped by strong travel demand, even as it trimmed its earnings expectations for 2024, the US carrier said Friday.

Automotive

Brazil's Embraer to start building flying taxis

Brazilian aeronautics company Embraer and its urban mobility subsidiary Eve said Thursday they would build a factory near Sao Paulo to manufacture flying taxis that could take off as soon as 2026.

Business

Lyft suffers another letdown in 1Q amid post-pandemic woes

Lyft began the year mired in the same ditch it ended in last year, with its ride-hailing service struggling to recover from a pandemic-driven downturn that triggered a change in leadership and layoffs that wiped out a quarter ...

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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