Search the forum,

years

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 Wikipedia.org
Recent contents Top users
  1. J

    Gas courses

    Hi, I'm a pipefitter/welder wanting to get into the domestic/commercial gas sector. Wanting to know if anyone can recommend any good training centres. many thanks jbbs
  2. G

    Memory lane: When Men were Men, and Boilers ran for 30 years

    Memory lane: When Men were Men, and Boilers ran for 30 years My old 1972 floor-mount boiler is on the way out. The casting's been weeping water for a 12 month now, a Potterton brick of a thing, bigger than any washing machine. A Honeywell 2 button, as an upgrade?!, not much else in it. You know...
  3. W

    No problem with diverter valve after 25 years of use.

    got called to to look at problem with an elderly ladies heating system. i initially (after phone conversation) thought it was either pump or diverter valve. well i got to property only to find it was neither. I was pleasantly surprised to find that the old stuff still works well.
  4. Eyespy999

    Water softner - Cal Mag

    Evening, I am still on the look out for a water softener, Has anyone fitted or have experience of a Cal Soft midi at all? Any advice appreciated Cheers
  5. B

    Info on Baths supplied by Dolphin Bathrooms

    I, to my eternal regret, had a bathroom fitted by Dolphin Bathrooms around 12 years ago. The front panel on the 'P' shaped bath is in urgent need of replacement but I cannot find any information as to the make or model of the bath. Any pointers as to the manufacturers of the baths that those...
  6. P

    Vaillant

    First they want the service and breakdown of jobs you originally got now they want to fit a boiler for your customers. I will not be buying vaillant boilers anymore.
  7. R

    Remeha boilers

    i have to attend a breakdown tomorrow for this boiler and the fault reported is Eo! anyone point me in the direction maybe by any chance of what the fault is ? not worked on these before so what they like to repair?:ack2: ta
  8. Best

    16 years and never serviced!!

    Just been to a Worcester oil boiler I installed along with full system 16 years ago. Never has been serviced for 16 years since I commissioned it. Worst timescale neglect I have seen Boiler burner had finally broke down with electrical fault and customer rang me to fix it. Strangely, one of...
  9. K

    TPI 608 Singl Input Digital Manometer or Testo 312-2 Manometer Pressure Meter

    hi there, Has anyone got an opinion on the two Digital Manometers?
  10. S

    Glow worm hideaway.

    Hi, my mum has a glow worm hideaway which is about 25 years old. The control for it broke years ago so she just switches it on and off manually by pushing the heating and hot water buttons down. She has no temperature control or any way to program it to come on. Does anyone know if there are...
  11. M

    Good Hacksaw

    Can anyone recommend a good hacksaw? Thinking of getting one of the dearer bacho ones? Got a cheapish one were the blade is always at abit of an angle so goes off square. Thanks.
  12. L

    Rayburn 460K mk 3 nuway burners

    c'mon you lot, never had to do one yet in 8 years of avoiding them. How easy is it to replace the oven protector plate on these, old lass called me saying her engineer of 12 years just advised her to call in an expert as he has no idea. So I suspect it is badly warped and he has flown the...
  13. S

    Any good job leads london and around ?

    Any jobs ??
  14. hammers4spanner

    New gas anaylser

    Unsure what to do here , my testo has gone ping now so in the market for an upgrade . Are the TP1 'S any good or complete waste of money?
  15. Russel

    Stelrad, Myson or Quinn?

    Just a quick question for those of you who fit this stuff day in, day out... I quite like the 'designer' offerings from Stelrad, Myson and Quinn. Price wise, they are about the same, through a merchant, so not a huge difference there for me. Only thing is, Myson and Quinn have 10 year...
  16. R

    Add it to the list!

    DAY OFF!! finally after five years (or more), 2 dripping kitchen taps sorted, dodgy toilet flush sorted :clap: got her to do the tidying up after the job as you do.lol will be taking a rest now planning for the next future home maintenance plan.lol
  17. Best

    This day, 100 years ago

    This morning, 100 years ago the battle of Somme began. I was reminded of this tonight watching a programme on tv about the 36th Ulster Division who managed to reach and take the German front line on this day, but reinforcements never followed. And also the 16th Irish and the very moving personal...
  18. T

    Should I start again?

    Good Afternoon/Evening guys, Little background on me, I was doing a plumbing apprenticeship and was doing really well, around 10 years ago, right near the end of the Level 2 course I went a bit doolally and made some terrible life choices, nothing bad but basically jacked in plumbing. Now my...
  19. L

    Shower problem

    Hi everyone We had a new shower installed around 8 years ago. I'm no expert but I'm told it's a "Concentric dual control concealed thermostatic shower valve" with a fixed head. The shower is supplied from an oil fed Worcester Bosch combi boiler. The problem is that the temperature control...
  20. Eyespy999

    Poweflush training

    Afternoon all, I am looking at heading to Kamco for the day for their training of powerflushing. I did see the webinar that Adey ran a few weeks ago about using the magnacleanse on its own to flush a heating system, however I am keen to see what the Kamco kit can do, and if so any better /...
Creating content since 2001. Untold Media.

Newest Plumbing Threads

Electrical Advice | Electricians Blog
Tiling Forums UK
Tilers Talk
UK Tiling Forums
DIY Talk
Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock