\n<\/p>

\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/0\/09\/Determine-Longitude-Step-13-Version-3.jpg\/v4-460px-Determine-Longitude-Step-13-Version-3.jpg","bigUrl":"\/images\/thumb\/0\/09\/Determine-Longitude-Step-13-Version-3.jpg\/aid5987304-v4-728px-Determine-Longitude-Step-13-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

\u00a9 2020 wikiHow, Inc. All rights reserved. Note that you could also get the same answer if you used the further line and subtracted your fractional distance. To measure the longitude, we first have to figure out how much time has passed between noon in Greenwich and noon at our location. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. Topic: Calculate ETA using latitude and longitude. Easy. We know ads can be annoying, but they’re what allow us to make all of wikiHow available for free. Latitude is what a sextant will tell you, longitude is determined differently. Because of the projection required to render a flat map of the Earth's surface, large-scale maps, such as atlases, are only accurate to a certain degree. Ans. to practice math calculations, using the two samples provided (pg. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>

\n<\/p><\/div>"}, https://astro.unl.edu/naap/motion1/tc_finding.html, https://www.globe.gov/support/faqs/data-entry/measurement-times, https://www.rmg.co.uk/sites/default/files/GCSE%20Astronomy%20Coursework%20-%20Shadow%20Stick%20or%20Sundial.pdf, https://www.presby.edu/doc/military/FM3-25-26.pdf, https://flexbooks.ck12.org/cbook/ck-12-interactive-middle-school-math-6-for-ccss/section/5.9/related/lesson/coordinate-locations-on-a-map-msm6/, https://gisgeography.com/latitude-longitude-coordinates/, https://www.icsm.gov.au/education/fundamentals-mapping/datums, https://www.eso.org/public/outreach/eduoff/seaspace/docs/navigation/navgps/navgps-2.html, https://www.nps.gov/gis/gps/gps4gis/how2s_byCatagories/others/2004forFireMgmt/2_Slides_Using_Maps_with_GPS.pdf, https://journeynorth.org/tm/LongitudeIntro.html, https://www.nationalgeographic.org/encyclopedia/longitude/, consider supporting our work with a contribution to wikiHow. However, even if you happen to be without a working GPS receiver, there are still ways for you to estimate your longitude. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/6\/61\/Determine-Longitude-Step-1-Version-3.jpg\/v4-460px-Determine-Longitude-Step-1-Version-3.jpg","bigUrl":"\/images\/thumb\/6\/61\/Determine-Longitude-Step-1-Version-3.jpg\/aid5987304-v4-728px-Determine-Longitude-Step-1-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

\u00a9 2020 wikiHow, Inc. All rights reserved. If you know the time of sunrise and sunset, you can also calculate local noon that way. Center a protractor at the pivot point. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Dec 08, 2017, 05:09 am. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>

\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/a\/a2\/Determine-Latitude-and-Longitude-Step-2-Version-4.jpg\/v4-460px-Determine-Latitude-and-Longitude-Step-2-Version-4.jpg","bigUrl":"\/images\/thumb\/a\/a2\/Determine-Latitude-and-Longitude-Step-2-Version-4.jpg\/aid678866-v4-728px-Determine-Latitude-and-Longitude-Step-2-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

\n<\/p>

\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/52\/Determine-Latitude-and-Longitude-Step-5-Version-4.jpg\/v4-460px-Determine-Latitude-and-Longitude-Step-5-Version-4.jpg","bigUrl":"\/images\/thumb\/5\/52\/Determine-Latitude-and-Longitude-Step-5-Version-4.jpg\/aid678866-v4-728px-Determine-Latitude-and-Longitude-Step-5-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

\u00a9 2020 wikiHow, Inc. All rights reserved. This can result in "datum shift," which causes your coordinates to be off. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>

\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/d\/d0\/Determine-Longitude-Step-10-Version-3.jpg\/v4-460px-Determine-Longitude-Step-10-Version-3.jpg","bigUrl":"\/images\/thumb\/d\/d0\/Determine-Longitude-Step-10-Version-3.jpg\/aid5987304-v4-728px-Determine-Longitude-Step-10-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

\u00a9 2020 wikiHow, Inc. All rights reserved. The sun rises in the east and sets in the west. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. How do you know the latitude of any place. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>

\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/3\/31\/Determine-Latitude-and-Longitude-Step-8-Version-4.jpg\/v4-460px-Determine-Latitude-and-Longitude-Step-8-Version-4.jpg","bigUrl":"\/images\/thumb\/3\/31\/Determine-Latitude-and-Longitude-Step-8-Version-4.jpg\/aid678866-v4-728px-Determine-Latitude-and-Longitude-Step-8-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

\n<\/p>

\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/5c\/Determine-Longitude-Step-7-Version-3.jpg\/v4-460px-Determine-Longitude-Step-7-Version-3.jpg","bigUrl":"\/images\/thumb\/5\/5c\/Determine-Longitude-Step-7-Version-3.jpg\/aid5987304-v4-728px-Determine-Longitude-Step-7-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

\n<\/p>

\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/1\/15\/Determine-Latitude-and-Longitude-Step-13-Version-4.jpg\/v4-460px-Determine-Latitude-and-Longitude-Step-13-Version-4.jpg","bigUrl":"\/images\/thumb\/1\/15\/Determine-Latitude-and-Longitude-Step-13-Version-4.jpg\/aid678866-v4-728px-Determine-Latitude-and-Longitude-Step-13-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

\u00a9 2020 wikiHow, Inc. All rights reserved. What instruments do I need to calculate longitude? This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>

\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/9\/9d\/Determine-Latitude-and-Longitude-Step-10-Version-4.jpg\/v4-460px-Determine-Latitude-and-Longitude-Step-10-Version-4.jpg","bigUrl":"\/images\/thumb\/9\/9d\/Determine-Latitude-and-Longitude-Step-10-Version-4.jpg\/aid678866-v4-728px-Determine-Latitude-and-Longitude-Step-10-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

\n<\/p>

\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/d\/d9\/Determine-Latitude-and-Longitude-Step-3-Version-4.jpg\/v4-460px-Determine-Latitude-and-Longitude-Step-3-Version-4.jpg","bigUrl":"\/images\/thumb\/d\/d9\/Determine-Latitude-and-Longitude-Step-3-Version-4.jpg\/aid678866-v4-728px-Determine-Latitude-and-Longitude-Step-3-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

\n<\/p>

\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/25\/Determine-Longitude-Step-3-Version-3.jpg\/v4-460px-Determine-Longitude-Step-3-Version-3.jpg","bigUrl":"\/images\/thumb\/2\/25\/Determine-Longitude-Step-3-Version-3.jpg\/aid5987304-v4-728px-Determine-Longitude-Step-3-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"

\u00a9 2020 wikiHow, Inc. All rights reserved. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. While you could do it with a sextant and a very good clock, the portable GPS receiver will be both less expensive and far more handy. To calculate standard time, subtract the equation of time from the sundial time, then subtract the longitude from the answer you get. For more tips, including how to use a protractor and compass to measure latitude and longitude, read on! Locations west of this line have a longitude of up to 179° west; those to the east have a longitude of up to 179° east. You are west of the Prime Meridian and there is a 5-hour difference (300 minutes). What is Time Zone. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>

\n<\/p><\/div>"}. Together all of the above information can be used to calculate the difference of time between two locations. Use a plumb line to ensure that the stick is vertical. 8 and 9) as models. The next parallel to the north should be touched by the 2 ½ minute end. For example, suppose you've determined that local noon at your location is 12:42 p.m. You would add 5 to the value for the longitude line nearest the Prime Meridian, 70º, to get 75º. For example, suppose your location is about halfway between the line for 70º and the line for 80º. Next, you would need to find the differences in longitude (in degrees) between the two places. ". For example, if you are measuring at the start of May, which is half-way between the spring -- when the sun is directly above the equator -- and summer equinox -- when the sun is above 23.45 degrees north of the Equator, you would just need to add half of 23.45 degrees -- 11.73 -- to your measurement. You can download apps for mobile devices to help determine longitude and latitude including gps applications. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. How To Use Longitude To Calculate Time. longitude per hour. This image may not be used by other entities without the express written consent of wikiHow, Inc.
\n<\/p>

\n<\/p><\/div>"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/58\/Determine-Latitude-and-Longitude-Step-11-Version-4.jpg\/v4-460px-Determine-Latitude-and-Longitude-Step-11-Version-4.jpg","bigUrl":"\/images\/thumb\/5\/58\/Determine-Latitude-and-Longitude-Step-11-Version-4.jpg\/aid678866-v4-728px-Determine-Latitude-and-Longitude-Step-11-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"