i imagine it's reasonably easy to pinpoint the time within a few hours within at least the tropics, but if you get further north or south, it actually is fairly difficult to guestimate the time from the sun alone.

Where my nerds at learning this for fun lol

1. 12'o clock -> 90° - shadow angle = Q angle 2. Latitude angle on place - 23.5° = P angle 3. Q angle - P angle = R angle 4. R angle ÷ 0.25 = B days Final step = 21 june + B days = Today's date Note: above 23.5 degree latitude

Sir is there anyway i can contact you on few problems on astronomy please sir

thanks so much 3:35 already and im learning so much

How is longitude determined only by celestial observation ? (Hint: If your answer requires use of a chronometer, I would point out that a chronometer is not a celestial object)

this is so good and it can understand easy

I thought the readings required trig created charts to figure the latitude

Helped me make a small model of tsar bomba!

How did u know what time is was??? Did u ask the native Americans what time it was here?

I’ll keep it simple for the simple minded on here. Time was determined by an hourglass. This was turned by the officer of the watch every hour. That is how one determined time. Simple…..just like some of you lot.

The British control the world’s time……..fact.

this was so helpful thank you!

Thank you, this was very good.

Well explained thank you.

yeah no i’m failing geo 100%

This is amazing. you have explained in such a manner that even the layman can understand.

10 years later, random middle aged Australian doing some landscaping. Thanks for the video :)

Thankful for this video,because l interesting in this rock ,many kinds are found in my home ,so l research this

Tq sir

İf we dont have A watch and we dont know the time in UK

Hello Seth, excellent video! how can you be contacted? I am in the limestone regenerative business for sustainable architecture, and from what I see we have highly common interests that could really be something as a documentary. Please contact me!

The distance between them I don't understand I see 4 but u say 5 lines

If I could refund my tuition and give to you for doing my prof’s job, I totally would. Thank you for this amazing video.

My teacher barely explained to us anything. This video is a life saver! Thank you

thanks bro

Wow your explanation is topnotch ❤. Loved it , you oversimplify things .

There is a problem with this method. If the ship is anchored and is not moving from its current position, the clock continues to move forward. Therefore the clock's difference to GMT is irrelevant to current position of ship.

god bless you

5 points reflecting polaris's position is Psedeuoscience. Quit asking me to do you a favor or prove myself. I commented on the stupidity. Sextants, compass ,knowledge of the stars ,speed and a flat horizon is how navigation was performed. Simpler question "does water always find its LEVEL? Cmon big boy.

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To a traditional navigator things like GPS are very new and only by political chance available to civilians anyway. Its quite something to realise that young folk take the electronic systems as a given. It's like asking how Roman soldiers texted home. Quite shocking really. We learned the elements of CelNav in (UK) school about 14 yrs of age and today still use it in tandem with a modern ECDIS system. It might ?? have helped clarity here if the kind content creator (did a good job tho !) mentioned that altitude is measured from a Tangent to the earth's curved surface. That's the Apparent Horizon. Cel Nav does indeed seem to make use of a pre-Copernican perspective. Means nothing really ... the average person ought to be able to visualise celestial movement according to P-C and Proper motion (Heliocentric) at the same time .

Can you identify the 1/2 truths or not? Shows a right angle using a FLAT HORIZON. DEPICTS A GLOBE and starts lying. Pay close attention how the angles and " conclusive evidence than switches. Of course he totally omits conversion point in his discussion . As if you could see Polaris from everywhere. Then he shows decradating from Polaris lines that make no sense and is not what I observe. 5 angles of Polaris from 5 different sources?! Wtf? 5rays from 1 source is truth. How do right angles still work with a sextant when you're on a globe?😲 I know some how someway you convince yourself it is possible. Remember this technology is based on water always finds it's LEVEL. A tool researched ,devised,and invented for flat earth. It was reliable enough to successfully ship all that merchandise for centuries. Boy were they lucky that it still worked on a ball 😂🤣😂😉

I really love all your images and how you move the mouse/cursor around to show the directions and explain what you are talking about. I am a visual learner and I really appreciate videos like this. I will now always remember capillarity, Thank you!

Thank you for your help !

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One may wonder in that if Polaris could be used in determining latitude, why can't a particular star, any bright star as the reference point since stars also rise in the east and move westward. That is, set the clock in Greenwich when that particular star is on the meridian much like what's done with the sun. The only difference is the sun is done in daylight while it's nightime with the star. Sidereal noon, for instance.

Hi seth im in 6th grade this is teaching me so much thank you

bro i love you

Thank you for the mid-presentation test questions! Really helped. Keep it up brother.

THANKYOU

Very Good 🙂

This stuff is too hard to remember. My interest in learning this stuff to become a better hunter just fell off the cliff opposite of the map landing me in a sea of alcohol. The more knowledge I get with activities the worst I get at it.

So technically if you knew your lattitude and you took a noon reading at your location, then began to travel you would still be able to know your longitude without using GMT, would that be correct?