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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. alanmcm

    Moving into a new home and boiler system is 17 years old

    My daughter bought her first home and was hoping to convert to gas but its not available in the area, so thinking a boiler upgrade is the better way to go. Just after some advice and rough costs involved, is it worth getting a pressurised system installed and a new boiler and oil pump? Heating...
  2. IMRS250

    Returning to the Gas after 5 years.. advice please

    Hi all, I was previously a member of this forum about 7 years back but lost my login details so started again! I moved abroad and packed in the gas for a couple of years and then returned to the UK and went to Uni to be a teacher. After realising teaching is a massive headache I want to get...
  3. grumpydad

    £190 for extra 2 years warranty worth it? Viessmann

    Just about to order a Viessmann 100w. Comes with 10 year warranty. Or £190 extra for 12 years. The company I am going to use boiler hut, offer a Viessmann service for £100, I was going to skip the 2 year extra warranty, and put the money to getting Viessmann annual services. For example...
  4. J

    Flushing New shower that replaced old one unused for three years

    Hi, I would welcome any advice on the following. I have recently fitted an new en suite Mira select thermostatic shower which replaced the old one which was exactly the same model.The shower is fed from a Worcester Bosch combi boiler which was fitted eight months ago replacing an old combi...
  5. M

    Boiler with 1 year of use and 2 years of being idle in storage

    Hi all, A friend of mine gave me his gas boiler (24KW logic ideal) after only 1 year of use and it has since been sitting idle in storage for 2.5 years. I recently contacted a plumber to arrange having my current old boiler swapped with the boiler that has been in storage. The plumber warned me...
  6. M

    gas boiler has been idle in storage for 2 years, will it still work?

    Hi all, A friend of mine no longer needed a one year old condensing gas boiler so I took it off his hands and left it in storage for the last 2 years until I needed it. The time has come to replace my old boiler with the one that is in storage but when I was speaking with a plumber about...
  7. Bogart

    Gunged up or what after some 30 plus years

    Attached are a couple of photos I ha.ve just taken after cutting out some 28mm pipe. One ,which was on the flow leg, looks way worse than the return leg one. The flow leg is now down to what a 22mm pipe might carry. Why should one leg be so much worse? Would temperature make that much...
  8. DJseals

    Is installer liable 2 years

    Hi Guys, I had a terrible install in 2019 that has a litany of issues, all sorted after a while. my boiler started overheating and switching off, seemed like the DAB evosta 40-70/130 pump wasnt getting power, i called DAB in the UK for advice and on removing the casing say it was full of...
  9. P

    Using hot water from a vented system for the first time in 2 years

    Hi all For various reasons, we haven't used the hot water system in our house for a couple of years. It's a vented system with a tank in the loft. I want to try it out now but wonder whether there could be any potential problems from Legionella or anything else potentially nasty? I don't...
  10. E

    I have been using a Stanley stove with a back boiler for the past ten years.

    I have been using a Stanley stove with a back boiler for the past ten years. We are now converting to gas and have disconnected the stove from the mains. We would like to keep the stove but I am concerned about how safe/unsafe that might be. I lit a fire and as I had been told, we had a sauna...
  11. S

    29 years old and looking for a career change - any advice is welcome

    I currently work in an office job on mid 20's salary and hate being chained to the desk. Looking for a career change to become a gas and heating engineer. I have came across various courses which offer retraining such as the below...
  12. B

    URGENT How can I fix a banging noise in CH system- 14 years new drayton and sunvic valves -sealed system?

    This started last night at 11.25 and has me completely flummoxed. A banging noise that is hard to track down. When I'm in Bathrooom that has airing cupboard it seems to come from hallway when in hallway it seems for come from cupboard. The system is a grant boiler in an outside house, purpose...
  13. A

    Gateway into Plumbing at 39 years of age

    Good afternoon, before I start I appreciate I may be on a hiding to nothing here but here goes. I spent time working as a tradesman with my Dad back when I was 16 but lacked the foresight to see it through, and ended up working in IT for the last 15 years. However, I've got to a point where I...
  14. S

    URGENT Hi, I have an ideal Instinct boiler, its nearly 2 years old. I have started having problems with low pressure about a month ago.

    Hi, I have a two year old Ideal Instinct boiler that has been problematic for about a month with low pressure. A plumber came out twice and reset it and it seemed ok but its started loosing pressure again a couple of days ago. He has been back and blown something up in the boiler which he...
  15. K

    Hi I'm 20 years old and I am a fully qualified plumber and looking for a apprenticeship.

    My names Keir Wheeler and I'm 20 years old and I have recently finished my level 3 plumbing course. I have plenty of experience with companies like fortem in Birmingham and abs heating in Gloucester. I am now looking for an apprenticeship to start my career as a plumber and eventually gas engineer.
  16. O

    What a great web page!

    Hello all I became a gas engineer about three years ago, so still quite unexperienced but eager to learn. Many thanks for letting me join.
  17. T

    25 years experience gas heating engineer looking for new role London area

    Hi I'm a 57 year old mature gas heating engineer 25 years experience looking for a good solid position in London. Have all ACS quals, unvented and analyser. Previously held OFTEC, part P and LPG. Also have F-gas and BS4872 welding. Ex-forces so have insane work ethic. If anyone has anything...
  18. C

    Currently awaiting repair Combi Boiler leaking for 8 years. Is my plumber incompetent?

    Hi everyone, my combi boiler has been leaking for 8 years. It is a german Vaillant VCW 204 https://www.google.com/search?client=firefox-b-m&biw=1280&bih=672&tbm=isch&sa=1&q=vaillant+vcw+204&oq=vaillant+vcw+204&aqs=mobile-gws-lite..0l5#imgrc=b27-0Ajev_snmM%3A The thing is, this device is from...
  19. king of pipes

    Ideal icos 6 years without a service

    Went to this boiler today as the property is being sold and the owners have had a offer , the boiler was nearly jumping off the wall when firing up:eek:💥, stripped it down to find the heat exchanger blocked solid with aluminium scale not allowing a smooth flow of products through bit of tlc and...
  20. B

    Re-sit time, 5 years flew by, any recommendations

    Well my Non domestic ticket runs out in December, just been looking around for local companies in chesterfield area, not many and one demands i do the catering as a pre-requisite (no chance), lol Can anybody recommend something local to Derbyshire and South Yorkshire ? Many thanks BS
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