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A year is the orbital period of the Earth moving in its orbit around the Sun. Due to the Earth's axial tilt, the course of a year sees the passing of the seasons, marked by change in weather, the hours of daylight, and, consequently, vegetation and soil fertility.
In temperate and subpolar regions around the planet, four seasons are generally recognized: spring, summer, autumn, and winter. In tropical and subtropical regions, several geographical sectors do not present defined seasons; but in the seasonal tropics, the annual wet and dry seasons are recognized and tracked.
A calendar year is an approximation of the number of days of the Earth's orbital period, as counted in a given calendar. The Gregorian calendar, or modern calendar, presents its calendar year to be either a common year of 365 days or a leap year of 366 days, as do the Julian calendars; see below. For the Gregorian calendar, the average length of the calendar year (the mean year) across the complete leap cycle of 400 years is 365.2425 days. The ISO standard ISO 80000-3, Annex C, supports the symbol a (for Latin annus) to represent a year of either 365 or 366 days. In English, the abbreviations y and yr are commonly used.
In astronomy, the Julian year is a unit of time; it is defined as 365.25 days of exactly 86,400 seconds (SI base unit), totalling exactly 31,557,600 seconds in the Julian astronomical year.The word year is also used for periods loosely associated with, but not identical to, the calendar or astronomical year, such as the seasonal year, the fiscal year, the academic year, etc. Similarly, year can mean the orbital period of any planet; for example, a Martian year and a Venusian year are examples of the time a planet takes to transit one complete orbit. The term can also be used in reference to any long period or cycle, such as the Great Year.

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  1. JohnnoP

    17 Year old - Cafe trial shift then additional shifts then no job and no payment for work done

    17 year old daughter was invited to attend a cafe for a trial shift as waitress/kitchen hand. Trials usually go for an hour or two - but this one ended up going 10am to 3.30pm. (She just kept working - didn't question whether she was now employed or what) She was asked to come back the...
  2. MichaelBa

    Going straight into 2nd year of Bachelor of Laws

    Hi everyone, pretty much i have completed a pathway into Bachelor of Laws 2nd year but unfortunately i had found this course to be on the level of yr 12 Legal Studies... So are there any present or past Law students here that could please advise me on what i should learn/read/study in order to...
  3. D

    VIC Separation under 1 year

    I have been married ( overseas ) for under 1 year. we have been together ( partner ) 6 months back before that partner was overseas . In the last six months it only went downhill. Have been separated under same roof. Partner is moving overseas back soon. What are my next steps 1) If they move...
  4. Storm Hammer

    NSW I have concerns about my 4-year-old granddaughter

    I have been advised to get the police to do a welfare check on the child and the custodial mother. I wonder if the police will make things worse. The mother has a borderline personality disorder and is a recovered alcoholic who may have started problem drinking again.
  5. J

    NSW Employment Restraint for a Year

    Hi, This is the restraint on my employment contract, "On termination of you employment it is a requirement that you shall not work within the car rental industry, in direct competition with Jim Car Rentals Pty Ltd either on or within 100 kms of Sydney for a minimum of 1 year" I have been working...
  6. G

    VIC CSA have assessment but both parents want kids to goto private school next year

    Hello all The ex and myself have a current CSA assessment but we both want the kids to goto private school, the oldest starting 2022. The ex is a nurse and I'm a salary earner. I currently pay CSA to her. What's the best way to go about this so I don't get bitten in the rear end? Any advice...
  7. B

    NSW 12 year old does not want to see his father

    Hi my 12 year son does not want to see his father. He has not had any interaction with his father for nearly three years as his father mistreated him and now his father wants to see him again. We did do a parenting consent order 11 years however the courts rejected it as it needed to be amended...
  8. C

    QLD Child Support & Income changes

    hello all my partner has recently convinced child support that she is earning less money even though she has told me she is working more than ever in previous conversations. She is casual, so gets paid for the hours she works. I feel that is lying about this to child support - or worked out...