DIY Sundial

[@returnedfrompanama]

The angle you cut in the 4x4 post depends on your latitude.

[@ppnautica]

Mistake ERROR WHEN ORIENTED THE SOLAR DIAL. Magnetic North vs Geographic North These two places in the north are completely different. What is the Geographic (True) North Pole? The Earth rotates at the geographic north and south poles. The geographic north and south poles are the points of convergence of the lines of longitude (meridians) in the north. The south pole and the north pole are directly opposite each other. The North Pole of the earth (axis of the world) or IMAGINARY LINE CALLED THE AXIS OF THE EARTH, is located in the middle of the Arctic Ocean. Scientists have attempted to mark the North Pole. Because the water here is permanently covered in moving sea ice, it is virtually impossible to build any kind of permanent station at the true North Pole. On the other side of the Earth, the South Pole is located on a landmass known as Antarctica. Because the ice at the top of Antarctica moves only a few meters a year, the US Antarctica program has installed a marker here to delineate the true South Pole. What is the North Magnetic Pole? The Earth is a great magnet. The North Magnetic Pole (also known as the North Pole) is a point on Ellesmere Island in northern Canada where the lines of attraction from the north enter the Earth. A compass needle rests freely in its housing so that it can maneuver on its own. When you pull out a compass, it lines up with the Earth's magnetic field. The little magnetic pin is how a compass responds to the Earth's magnetism. This means that a compass needle will point to the North Magnetic Pole - which is different from geographic north.

[@colinspeake..8889]

Gosh what a load of man made beliefs..Don't listen to what science and man says about the poles as there aren't any ..The Earth is surrounded by the great ice wall wall hence the nations come together to protect and keep the truth from being told! Just look at the lodge of this treaty and you will see it depicts a flat earth..They are hiding facts in plain sight..The shysters!!

[@malinikc7120]

Awesome 👍👍😊

[@American-Plague]

Also, if you allow the disc to rotate, you can account for Daylight Savings Time and your location within your time zone. Still can't compensate for the equation of time, but this is only off of clock time by a max of 16 minutes (roughly) or less, depending on the time of year.

[@prashanthegde8574]

Nin tale

[@American-Plague]

@@prashanthegde8574 What?

[@travelforever8328]

How do you set it as the seasons change?

[@American-Plague]

You do not want to use a compass to find North. Magnetic North is not the same as true north.

[@prashanthegde8574]

Nin bulde chaddi

[@dafoex]

You can, but you need to find what's called the "magnetic declination" for your area. All the american sources say that NOAA have a resource on their website, I'm sure other countries with an equivalent organisation will have a resource for that, too. For me that organisation is probably the NPL, so I might start my search with them, and if they somehow don't have one, I might look at the Ordinance Survey, our national map makers (as the name suggests, they started making maps for the military). The Magnetic Declination varies over time, so whoever's calculator you use, make sure it's up to date.

[@American-Plague]

@dafoex Well, yeah. You CAN. All those things you mentioned are a pain, though. That it changes ove Its location and changes over time and you have to look it all up. It's a lot easier to find true north with some concentric circles and a stick. Nothing changes, nothing needs to be looked up.

[@American-Plague]

@@dafoex Or just find Polaris at night.

[@crazyassassin2381]

i would like to know why we need to find "North"? does it will effect the result if I simply choose any direction?

[@eduardoxenofonte4004]

@@BrianHealy666 only in the northern hemisphere, though

[@oguzozturk6855]

@Eduardo Xenofonte there is no northern hemisphere nor southern hemisphere. I mean earth is flat

[@allgood6760]

@@oguzozturk6855 The Earth is not flat the Earth is an OBLATE SPHEROID it is slightly flattened at the poles ... cheers from down under 🌎🇳🇿

[@normanacree1635]

The angle of the gnomon must be parallel to the earth's axis. The only way to do this is to point it to 'true' north. Not magnetic north.

[@American-Plague]

​@oguzozturk6855 Grade school children can and do prove you wrong. It's time to grow up bro.

[@torche72]

Upside down???

[@American-Plague]

It is not "upside down". It's properly constructed.

[@dex1141]

With this device the sun determines the day a soon as the light comes out?? Or when does the day end?

[@mmallick3224]

Every 6 month, you need to switch the poles of the clock in order to get the accurate timming. Make sure you check you latitude with you your standard latitude on which you regional time is set. If eastwards subtract 5 minutes with degree as the difference or add 5 minutes if westwards. As soon as the shadow of the rod will start falling on the board, you will get your accurate local time as per your latitude. Note that your geographical locations are greatest factor which will affect your time.

[@American-Plague]

​@mmallick3224 One degree is 4 minutes, not 5 minutes.

[@davesisler4158]

It needs to point true north, not magnetic north.

[@mmallick3224]

Yes, and for finding the true north you need a compass or now a days digital compasses are available in smart phones too. As accurate will be your installation with respect to your geographical location the accuracy of time view will increase.

[@davesisler4158]

@@mmallick3224 True north is the North Star. You cannot use a compass...

[@mmallick3224]

@@davesisler4158 I see you are talking about Polaris. Yes, fine. In Sanskrit we call it as Dhurva Taraka.

[@Void-Null-Panda]

@@davesisler4158 You can use a compass and find the magnetic declination for your area.

[@davesisler4158]

@@Void-Null-Panda Magnetic north is not true north... so you cannot.

[@rupeshbalpande5518]

On which direction the sundial face

[@dafoex]

The 6 O'clock line needs to be on the West/East line, and I think 12 O'clock faces North no matter whether you are in the Northern or Southern hemisphere. Fact check me on that last one, but if you mount it upside down it shouldn't be too hard to flip it 180 degrees

[@zackrichardson2732]

Does the size of the circle matter?

[@normanacree1635]

Nope. A bigger circle will make for a more accurate reading since the distance between the hours will be greater.

[@GustavoAlves-ns1uz]

Your hours mark may be wrong depending on your location. Also you wrote it upside down 😂

[@uranusmoon40gaming77]

Shut up

[@American-Plague]

The hour marks are not wrong. It simply needs to be rotated however many degrees you need to compensate. They are still 15° apart no matter where you are.

[@American-Plague]

It's also not upside down. You should do a little more research on how these work. (Not being condescending, just saying if you want to understand how these properly work)

[@leohorishny9561]

I could be wrong, but unless you live along the latitude of 45⁰, this won't be accurate. As for the numbers being "upside down"...um, a bit Northerncentric aren't you? If this video was made in the Southern Hemisphere, it would likely work this way. I'm only a KZbin dialer though, so....🤔

[@leohorishny9561]

And the only thing "upside down" for this was the AM and PM on the dial, if you want to be a stinker....

[@American-Plague]

This is not only accurate at 45°. It is accurate anywhere. It depends on what angle you place it at considering your latitude.

[@American-Plague]

And no, it isn't "Northercentric". For a "Southercentric" person, you simply point it at the South celestial pole. What's it matter anyway? Go watch an Australian build a sundial if that's what you want to see. Complain that they're being "Southcentric". Don't you have anything better to do than whine about a video where someone actually has more knowledge than you do about the subject at hand?

[@eqlzr2]

A whole lot of work for a big obstruction in the back yard.

[@normanacree1635]

Make one that you can move out of the way when mowing. It ain't rocket surgery.

[@jackym05]

First viewer

[@Growler57]

Just buy a watch

[@American-Plague]

Yes. There is no purpose in having a hobby that's a virtual mathematical wonder, is there? Let's all get on welfare while we're at it too. Because why take an interest in doing anything at all when it could be handed to us? What a chump this guy is.

[@dafoex]

Where's the fun in that?

[@nithishkumar8458]

This technology from our ancient king in vikarama cholan in tamilnadu

[@bubux4851]

That was lame.

[@tomrobinson736]

On behalf of the king's school, we respectfully reject the ideologies of this comment

[@254JROCK]

If u think so perhaps, u are , takes one ☝️ too be an Asshole 😂

[@dafoex]

Askers? Carers?