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.

View More On
  1. Zig168

    Replacing a 22 Year Old Boiler any recommendations?

    I've got a non condensing Glowworm Ultimate with gravity tank and hot Water tank in a 4 bed house. 11 radiators 1 double 1400mm length 1 P+ 1400mm length 2 P+ 400mm length 7 singles 400mm 1 mains shower average water pressure Any recommendations on combi boiler and KW? Boiler budget...
  2. Dan

    Happy New Year 2024 from Plumbers Forums - Any resolutions?

    HAPPY NEW YEAR 2024 FROM PLUMBERS FORUMS! Do you have any new year resolutions? I'm thinking:- Get Fitter (give it 30 days) Drive slower (couple of days)
  3. J

    Riello 35 year old nozzle

    Got this from a friend which allegedly was in continuous use for 35 years!!, the (Firebird) boiler was/is running on a mixture of 75% "diesel" + 25% kerosene, the nozzle itself seems to be of a different material to the modern ones, it was spotlessely clean when I dissassembled it, I would love...
  4. A

    15+ year old Glo Worm back boiler repair or replace with a new Combi.

    So I've got a Glow Worm back boiler fronted by a gas fire, at least 15 years old probably a lot more. The water heating makes a row as there is a partial blockage in one of the pipes - this I believe to be resolvable with a power flush and pump replacement. The front fire is spilling fumes and...
  5. F

    Megaflo Problem - advice please

    Hi All - I have a Megaflo which has required frequent repressurisation in the last year or so. The last time I did this, I had a continuous stream of water through the tundish for a couple of minutes which has never happened before. My naive guess is that the compartment membrane has died...
  6. D

    20 year old UFH - Upgrade?

    Hi, I have domestic water based UFH - 20 years old. House is 100 years old with 5 beds. UFH everywhere. Works okay but perhaps could be better. Top of house is coldest. I have newish worcester boiler(Greenstar 8000 life). System is on 4 different storeys, 5 manifolds and perhaps 18 loops...
  7. omendata

    Blocked Cold Water Tank Pipes - Doing my head in for over a year

    Ok I have been dealing with this problem for over a year and finally have to ask for some help as backflushing every 2 weeks or so is getting very tiresome. I live in a 60's flat (3 flats per side of the block so 6 flats in all) with two overhead water tanks in a tankhouse on the flat roof for...
  8. L

    "Should " A 3 year old Vailant have had a protection filter kit ?

    Friend has there boiler install company do the annual service exactly 3 years this week of them carrying out the install etc .The engineer told her that she needs a filter and it would roughly be £200 fitted (No issues there) .But was it not a requirement 3 years ago for all Vailants to have...
  9. J

    Been lurking for over a year, just saying hi

    Joined a long time ago to read and learn, been flat out busy and never said hi, so hi everyone, thanks for the tips you share.
  10. R

    23 year old Vaillant Thermocompact needs replacing - flue problems?

    We built our detached house 23 yrs ago, having a Vaillant Thermocompact boiler with a Megaflo tank, and it's been excellent. The boiler sits in a room under the stairs, with the flue discharging out of the side wall (no windows or doors) at a height of around 2.5m from the ground. The...
  11. maleekos98

    I might give up on Plumbing this year...

    Hey guys, It's been an overwhelming & difficult year for me last year... so moving forward I have decided to change b.usiness industry. I have two plumbing web.sites and instead of wasting them (as I won't be using them anymore), I'm willing to give them away to someone who will benefit, so if...
  12. CorgiDirect

    We wish you a merry christmas and a happy new year

    Merry Christmas and a Happy New Year from all the team at CORGI direct
  13. 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...
  14. F

    12 year old Vaillant Eco Tec Plus 415 keeps turning off

    Hello, can anyone advice me on my Vaillant Ecotec plus 415. The boiler starts up but switches off after a few minutes. If the temp dial is turned up then it makes a very loud banging and flapping sound. I was advised to get system flushed by one company and another said the boiler is old i...
  15. K

    Need Genuine Advice about Plumbing and Gas Course - here is my 1 year plan to get into the industry

    Hello Plumbers/Gas Engineers, Excuse if this question has been raised but i am in a slight dilemma and for the past 2 weeks the internet has not really solved this, so I feel i need some real advice from real tradesmen. I am 21 and stuck behind a desk not progressing into a career, I have...
  16. S

    Hi I'm Stuart, a 75 year old active DIYer

    I started out life as an electrical engineering student then apprentice in an electric control gear company in the early 1970s I then spent most of my working life designing computer systems and running projects to implement them I retired some 14 years ago and am spending my time transforming...
  17. P

    Hi guys I am in need of some help, I have a 24 year old Boulter 50/70 utility oil boiler (camray) with a Riello 40 burner.

    The boiler has just been serviced and lots of new parts fitted, On firing up all works fine for approx 15 seconds then the flame cuts out but the motor keeps running, after approx 10 seconds the flame fires up again for 15 seconds and the same thing happens. If I remove the front door/cover of...
  18. NeetieM

    Replacing a 12 year old air source heat pump

    Hello, I hope someone can give me some advice on replacing an old air source heat pump. We moved into a shared ownership house last year which has a Daiken air source heat pump fitted to provide heating and hot water. The unit was fitted when the house was built 12 years ago. It seems that the...
  19. T

    Replace 50 year old gloworm ?

    I have a very old Gloworm boiler. Been advised by gas engineer to replace for modern unit. It's working fine but worried about availibilty of parts and getting a plumber to work on it. Any advise ?
  20. candell

    Problem with toilets in 6 year old house

    Our new build home is now 6 years old and the toilets are starting to have some issues. The soft close seats and lids no longer soft close, I've searched everywhere and found many tutorials but can't see one that matches our seat type. I even contacted Ideal Standard many times but they fail to...
Creating content since 2001. Untold Media.

Some Stats

Latest member