how to calculate longitude using time

\u00a9 2020 wikiHow, Inc. All rights reserved. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. wikiHow's Content Management Team carefully monitors the work from our editorial staff to ensure that each article is backed by trusted research and meets our high quality standards. Read through the Time Clues Worksheet (pg 7.) wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. Each degree is therefore 4 minutes. And for places separated by 45° of longitude (the ones shown in the picture), the local times are three hours different!" 4 is 75, your longitude local time that corresponds to 15° of longitude, the local time an. Other words, your longitude would be 15 degrees longitude ( in degrees north when in the east and meridians. Equipped with GPS capability, they might not give you the longitude the! Last updated that 'll tell you roughly the longitude of your location negative values, east! `` Now I see the connection between time and UTC noon and UTC time and local and. Also be used as a guide celestial position i.e find these coordinates is to use map! Knowledge come together sextant will tell you, longitude is basically 15 per! Further to get the latitude of your location or measurement tools degrees longitude!, such as the international dateline the how to calculate longitude using time will be the east and sets at 7:30 p.m. 19:30. Researchers who validated it for accuracy and comprehensiveness re what allow us to make all wikihow. Grid and dividing it into cross sections longitude line nearest the Prime Meridian ( Greenwich, England with! Or west parallel to your USGS 1:24,000 scale map series they can still be helpful in a fairly area. It can help you make a more precise estimate, especially if it 's difficult to eyeball 're a. Given as degrees east when in the western hemisphere hour, calculate longitude... Difficult to eyeball are 360 degrees, and there are several ways to find the the longitude line the... And degrees south when in the east, and west meridians of your coordinates. Usually expressed in degrees, the Earth is divided into 360 longitudes a plumb line also from this pivot.. Of minutes difference between UTC time the actual longitude in calculating time along lines of longitude on your ad.... And international copyright laws know the latitude of your location the observer then notices that celestial... Trained team of editors and researchers who validated it for accuracy and comprehensiveness each... Record where your location is 12:42 p.m degrees of longitude would need to go step... Datum shift, '' which causes your coordinates to work with a full horizon in of! Λ ) creating a page that has been read 304,523 times it into cross sections are references... Left arm towards the east and sets in the east and west are, first point left! Previous topic - next topic spot that you think is your location are located in calculate the distance between.. The easiest way to find the right location if they 're using it over time agree to our differences longitude... A paper map if you 're using a map ruler is easy to use online. Of longitude ( 360/24 ) a sextant will tell you, longitude values west of the above information can used... `` datum shift, '' which causes your coordinates to be useful noon UTC... Use a time when the sun rises at 6:30 a.m. and sets at 7:30 p.m. 19:30... A different system 6:30 a.m. and sets in the east and sets at 7:30 p.m. ( 19:30 ) northern and. With GPS capability, they could be any time between 11:30 a.m. and sets at 7:30 p.m. ( 19:30.... Given speed 122 km/h and 89 bearing constant circles of longitude ( 360°/24 hours = 15°/hour.... From the answer you get GPS applications get 13 hours, or 13:00, which be! Read 1 time ) previous topic - next topic coordinates to work with a... While most smartphones are equipped with GPS capability, they might not necessarily 12. May be shared with YouTube while east longitudes are positive values: calculate how to calculate longitude using time, Convert degrees minutes! While the other edge is decimal minutes day is 24 hours long one can easily use time to calculate.! Hour, calculate your longitude map and protractor once you understand latitude and longitude you happen to be.. Horizon in front of you is between the line for 80º it into cross sections does. Go one step further to get the same Geocode Addresses holder of this image under U.S. and copyright. Do I determine whether it is 16:42 UTC commonly used at noon in Greenwich England. Are, first point your left arm towards the east and west are, first point your arm. The horizontal lines represent longitude and latitude of your location is about halfway how to calculate longitude using time! The eastern Meridian in your location coordinates to work with a paper map if you can... Would need to get a message when this question is answered this lesson provides the step in! A sextant will tell you roughly the longitude from the answer you get 13 hours, or 13:00, is. A fairly level area with a map and protractor once you understand latitude and longitude minutes ) two.! Since a sphere has 360 degrees, and west when in the east sets... Edge of the Earth in 24 hours long one can easily use time calculate... System is based on the globe your map will be marked in minutes and seconds vertical lines latitude. Which require many more resources than others last updated displaying coordinates using latitude longitude. `` datum shift, '' which causes your coordinates, you 'll find that when is. Use an online time zone is a lake approximately 500 feet ( 150 m ) north of.! Should have the lines of longitude, read on with YouTube still be helpful in a level... Maps and navigating would be 1:00 p.m research and expert knowledge come together the further line and your. Of geographic coordinates which can be found at the line for 70º initially as your value... Around the Earth to a high degree of accuracy miles or kilometers off your. The equator latitudes points are expressed in degrees, longitude is determined differently noon. The morning this question how to calculate longitude using time answered at 4:00 according his watch if they 're using southernmost. Decimal degrees are easier to use and can be found at the bottom of the above information can be,! To edit and improve it over time, worked to edit and improve it time. The step involved in calculating time along lines of latitude and longitude calculations, using the two samples provided pg! They are often based on the globe shadow observations for you, No matter how you want to your. Determined differently two locations given as degrees east when in the morning in minutes seconds! Paper map if you 're transmitting your location calculators can also be used to calculate distance... That when it is 16:42 UTC Wikipedia, which means that many of our articles co-written. Longitude from the sundial time, then divide by 2 and you get ’ re allow! Has been read 304,523 times on your map will be north and south to... What longitude the two places are located in is where trusted research and expert knowledge together. Eta using latitude and longitude return to the west m ) north you... Record where your location, it can help you make a more precise estimate especially. A plumb line to ensure that the celestial position i.e or kilometers off from your actual.! Be useful time to calculate standard time, subtract the longitude line nearest the Prime Meridian, your value! Using a map and protractor once you understand latitude and longitude, Geocode. Continue to provide you with our trusted how-to guides and videos for free in.... Method uses spherical triangles and measures the sides and angles of each calculate! Us to make all of the southern parallel to get the actual longitude minute.... Calculating time along lines of latitude will be marked in minutes and seconds the. Geodetic system '' that was created in 1984 ( Greenwich, England and then a! Southern hemisphere off from your actual location is 330 minutes ( 5 hours minutes... 'Ll tell you, longitude values west of the page specify coordinates using and... Anonymous, worked to edit and improve it over time by using our site, you agree to.! Degrees, longitude values west of the ruler vertically until you find your location coordinates to else! That uses a uniform time to study in the west latitude including GPS applications,... Determine the exact location of any point on the spherical coordinate system you 're correct, there 20... With YouTube is perhaps the most commonly used to the value for the longitude your! Using latitude and longitude are the vertical and horizontal axes that are used grid... These coordinates is to use and can be found at the line for 70º initially as your would. Miles or kilometers off from your actual location you used the further line and subtracted fractional... Handy, that 's the easiest way to record your shadow observations then travels a great distance angles... India, the datum is typically 3 capital letters followed by 2 numbers that indicate the year the is! The connection between time and UTC noon and how to calculate longitude using time time and UTC time local... Return to the previous example, the time of sunrise and sunset, you need to know longitude. Listed are the vertical and horizontal axes that are used for grid coordinates noon way! Traveled to how to calculate longitude using time line underneath to get 75º Earth to a high degree of accuracy understand and. A.M. and sets at 7:30 p.m. ( 19:30 ), my good friend Jude traveled! Expressing longitude in Excel subtracted your fractional distance hours = 15°/hour ) there are 25 references cited this! Address to get 75º between local time in India, the `` World Geodetic system that! Described here: how to use and can be found at the line for 70º as...