how to calculate longitutue and latitude?

Answer 1

U need to buy a special calculate

Answer 2

1. Buy an ephemeris. This is a book which lists the time of the upper and lower culmination of the north star for every day of the year. It also gives you the eastern and western elongations. The North Star is not exactly at true north. Level your transit. If you observe the star at, say the upper culmination, fix your instrument on it. Consult the ephemeris to determine the location of the lower culmination on that day. Divide the angle between the two culminations by two and move your instrument in the proper direction so that it is between the two culminations. Now measure the angle between your setting and the North horizon. This will be your North latitude in degrees, minutes, and possibly seconds, if your instrument is that good and you are on land..
Longitude is measured from Greenwich Observatory in Greenwich, England. The ephemris will give you the position of the sun at certain times. Your watch must me set exactly. By measuring the differece in time between the ephemris and the actual time it arives at the stated location, you can calculate your longitude.

Answer 3

Bibs has an answer for night time.

For day time the way used to be to use a sextant to measure the height (angle) of the sun at it's zenith (i.e. real midday, not day light saving etc.) and refer to an almanac such as Reeds Nautical Almanac to know where you are. All this takes about 20 minutes if done manually and thus is not that accurate if moving such as on a ship since you are 20 minutes travel away from where you took your sighting so corrections are needed as is an accurate chronograph. The time aspect is for the east-west element of your location & the angle gives the north-south element.

I am not about to explain the maths to it here. It takes toolong & I am rusty at it, so could be wrong now.

Nowadays simply switch on a GPS & it will tell you exactly where you are.

Answer 4

Latitude is the north-south angle between the equator and a point, with the vertex of the angle at the center of the Earth.

Longitude is the east-west angle between the prime meridian and a point, with the vertex of the angle at the center of the Earth.

They are not calculated, they are measured.

Answer 5

they are not calculated they are counted as these are used to tell where a specific place is located.they are basedon divisions of time zones from north to south & east to west i think each degree=4kms.& they can be used to pin-point a certain location& that ia called quardinates of each city.with each increasing degree the time also changes due to position of sunrays falling on that area