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A year is the orbital period of a planetary body, for example, 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. In English, the abbreviations "y" and "yr" are commonly used ("a" is also used) for the unit of time, though its exact duration may be inconsistent.
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. king of pipes

    That wasn't there last year ????

    First service on a Intergas HRE 36 combi I fitted last year talk about make it hard for you customers grrrr . Have a good day chaps . Tkop
  2. S

    Cleaning 100 year old cast iron rads.

    Morning people, I’m in the middle of a listed building refurb. The customer is having overlay ufh throughout and using the original cast iron rads as the supplementary heat. I’m removing the top and bottom entry bushes to have them at the bottom, there’s lots of dried magnetite coming out. I’m...
  3. townfanjon

    Happy new year. .

    Happy new year to all , may 2019 bring you health and happiness. Interested to know any of your plans and dreams for 2019 .
  4. A

    Boiler with 10 year warranty?

    I have been to look at a job, customer needs a combi swap. He has been looking online and has decided he wants a 10 year warranty. He wants worcester, vaillant or Ideal. I can't find anything with a 10 year. Is this possible? if so I'm sure it will mean the install has to meet certain criteria...
  5. leelister6

    It always happens this time of year!!!

    As usual, phone going mad with people needing work doing before Christmas. "Me bogs bin bust since February but me Mam's comin fer er Christmas dinner an she got dodgy bowels, can yer do me a new bog before she comes?" "Need a bathroom ripping out, plastering, tiling and new one fitting...
  6. M

    18 year old looking for training

    Anyone in burnley or surrounding areas thinking of taking on an apprentice my lads 18 yr old and has finished his second year at college .College are now saying they are not allowed to teach them gas in the 3rd year it needs to be an apprenticship for the work experience.thanks in advance. Or if...
  7. C

    25 year old commercial metering engineer looking for experience

    Hello guys, Been a memeber for quiet a while now and some great advice given. For the last 4 years I’ve been working as a sub contractor working for the gas suppliers fitting and exchanging gas meters u6 to u160’s And rotary meters. As with all contracting work it’s started to dry up I’m...
  8. ShaunCorbs

    Another Year 231654654

    :)
  9. C

    Grant Boiler Knocking only a year in...sound files attached

    Can anyone offer any guidance please. System installed a year ago. Oil fired grant vortex pro. Recently started knocking - have read and I see it could be anything from kettling through to pipes. I attach sound files links as someone may recognise the sound: Dropbox - Boiler 2.mp3 Dropbox...
  10. O

    Merry Christmas & a happy New Year.

    Hi lads, As usual I'll be off from tomorrow morning and wanted to wish every single one a beautiful Christmas & a happy New Year. I hope to hear from you all back in 2018. Thank you all for you massive helpf this year 2017 it is very much appreciated. Without you all it would have been very...
  11. Dom Perkins

    That question again this time of year...

    Hello, It's that time of year again when everyones put their heating on and you watch the Operating pressure struggle to get to where you want it.. I'm after a bit of advise regarding what people have left on safely with regards to operating pressure.. I have just fitted a 34cdi.. I didn't check...
  12. M

    Dripping valve on domestic expansion vessel 4 year old system

    I'm hoping someone can please help as I'm struggling to find a solution I've a 4 year old house and the system was fitted as new. It has a large water tank and an expansion vessel however every morning I'm woken up to the sound of water dripping through this fitting as shown below. This value...
  13. S

    3 year old new build flat - Powerflush required??

    Hi all - looking for some quick advice and all opinions welcomed! Question: Is it really possible for a 3 year old new build flat Ideal Combi 35 to have "Multiple component failure due to poor water quality - drain down & powerflush required to inhibit future related issues, which are now...
  14. S

    3 year old new build flat - Powerflush required??

    Hi all - looking for some quick advice and all opinions welcomed! Question: Is it really possible for a 3 year old new build flat Ideal Combi 35 to have "Multiple component failure due to poor water quality - drain down & powerflush required to inhibit future related issues, which are now...
  15. J

    Help, 29 Year old Female looking to train to become a plumber.

    Well as the title suggests i'm looking to train to become a plumber in the Nottingham area. Having done various other jobs i have now decided to have a complete career change and would welcome any advice anyone would be able to offer me. Having trudged through the internet i am still no...
  16. C

    31 year old career changer

    Hi all, my name is Chris and I have just taken the decision to train part time for a NVQ level 2&3 in plumbing. I'm told the course touches also on electronic installations like power showers etc and also on the use of gas in a boiler though I believe Corgi certification is separate. Window...
  17. R

    1st year exams

    Hi, I've been in to my loacal collage to discuss the options for me, the tutor has told me because of my building experience to date they will let Go straight in at year 2 but have to still sit year 1 exams. Which I am very happy with. I will be doing 3-4 days a week with a plumbing company as...
  18. B

    What a terrible start to the new year

    Not long got back in from my cousins,her step daughter committed suicide last night,poor soul was just 23 with 2 young kids,youngest just a year old,looking like the girls ex pushed her into it with constant abuse etc,they had split but he was apparently a right ******* with her,i didn't know...
  19. M

    Happy New Year

    New to ukplumbersforums. Happy 2017 to all.
  20. jonnyswamp

    No more work til next year

    I think I've finished for the year :D May celebrate with a few tins and a bit of Ribeye tonight, just as a practice for Black friday tomorrow A few of us (mainly one man bands of varying trades) usually have a day out and give ourselves a pat on the back for making it (relatively) safely through...
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