International date line

THE INTERNATIONAL date line (IDL) is the imaginary line on Earth slicing through the center of the PACIFIC OCEAN that separates two consecutive calendar days.

The International Date Line (IDL) is an imaginary line that runs from the North to the South Pole and separates two calendar days.

International Date Line Map - The International Date Line map shows an imaginary line running from the North pole to the South pole, corresponding its length to the 180th meridian on the surface of the earth. It demarcates two consecutive calendar days. World map showing the International Date Line.

The International Date Line goes through the Pacific Ocean at about 180 degrees longitude. Where is the International Date Line? See it on a time zone map.

The International Date Line

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Latitudes & Longitudes | Standard Time

World Time Zones

International Date Line, imaginary line extending between the North Pole and the South Pole and arbitrarily demarcating each calendar day from the next. It corresponds along most of its length to the 180th meridian of longitude but deviates occasionally to avoid dividing closely associated geographic entities.

Originally published in August 2013. Updated April 2020. Have you ever lost an entire day? Perhaps you slept through it. Perhaps you forgot to tear a day off your calendar. You may have simply wanted to forget a day, or make one speed up. Or perhaps, like Steve and me, you lost it somewhere over the […]