Table of Contents
- 1 How longitudes are calculated?
- 2 What is the difference in km between 2 longitudes on Earth’s poles?
- 3 How do I calculate the difference between two longitudes in a PDF?
- 4 What is the difference between longitude and longitude?
- 5 How much is degree of longitude equal to in miles?
- 6 How do you calculate distance between two latitudes?
How longitudes are calculated?
Longitude at a point may be determined by calculating the time difference between that at its location and Coordinated Universal Time (UTC). Since there are 24 hours in a day and 360 degrees in a circle, the sun moves across the sky at a rate of 15 degrees per hour (360° ÷ 24 hours = 15° per hour).
What is the difference in km between 2 longitudes on Earth’s poles?
A degree of longitude is widest at the equator with a distance of 69.172 miles (111.321 kilometers). The distance gradually shrinks to zero as they meet at the poles. At 40 degrees north or south, the distance between a degree of longitude is 53 miles (85 kilometers).
How do you calculate longitude in geography?
The Earth rotates one full turn (360º of longitude) in one day. It therefore turns one degree of longitude in 1/360th of a day, or every four minutes. To calculate your longitude, you therefore simply need to work out the time difference between noon at your location and noon at the Prime Meridian.
How do I calculate the difference between two longitudes in a PDF?
Each degree is divided into minutes and minutes into seconds. The Earth takes 24 hours to complete one rotation or to cover 360° of longitudes. This means that the Earth covers 15° of longitudes every hour. One degree of longitude takes 4 minutes (1 hour = 60 minutes, divided by 15° per hour = 4 minutes per longitude).
What is the difference between longitude and longitude?
Longitudes: The vertical lines running north-south, join the two poles. They are called the meridians of longitude….What is the difference between Latitude and Longitude?
Latitude | Longitude |
---|---|
It is known as parallels | It is known as meridians |
The length of the lines are different | The length of the lines are the same |
How do you determine longitude?
Calculate your longitude. To find your longitude (represented by ‘’λ’’), in addition to the sidereal time you just found, you need to know the right ascension of the star (‘’a’’) and its transit time (‘’t’’) you found earlier. The formula for longitude is λ = ϴ0 – a + (1.0027 * t).
How much is degree of longitude equal to in miles?
One-degree of longitude equals 288,200 feet (54.6 miles), one minute equals 4,800 feet (0.91 mile), and one second equals 80 feet. Illustration showing longitude convergence. Latitude distances remain constant.
How do you calculate distance between two latitudes?
To calculate distance more accurately, you can further divide degrees of latitude into minutes and seconds. Each degree contains 60 minutes, while each minute contains 60 seconds. Simply divide by 60 the distance a degree covers to find the distance a minute covers, and divide by 60 again to find the distance a second covers.
What is at zero degrees latitude and zero degrees longitude?
Zero degrees latitude is the line designating the Equator and divides the Earth into two equal hemispheres (north and south). Zero degrees longitude is an imaginary line known as the Prime Meridian. Therefore, we are looking for what exists at the location where the Equator and the Prime Meridian cross each other.