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International Date Line (approx. 180° Longitude)

The International Date Line is the internationally recognized zigzag boundary on Earth's surface where the calendar date changes by exactly 24 hours. Crossing westward adds a day (+1), while crossing eastward subtracts a day (-1).

Geographic Dimensions & Position

Exact CoordinatesApprox. 180° Longitude (with political zig-zags)
Circumference / Length20,003.93 km
Scientific Significance

Established to resolve the paradox of circumnavigation timekeeping first observed by Magellan's crew in 1522.

Countries & Territories Crossed

Pacific Ocean (zig-zags around Kiribati, Fiji, Samoa, Tonga, and Aleutian Islands)
Frequently Asked Questions

People Also Ask About International Date Line (approx. 180° Longitude)

High-intent geographic questions regarding coordinates, traversed nations, and planetary geometry.

QWhat are the exact coordinates of International Date Line (approx. 180° Longitude)?

International Date Line (approx. 180° Longitude) is positioned at Approx. 180° Longitude (with political zig-zags) relative to the WGS84 ellipsoidal reference frame.

QHow long is International Date Line (approx. 180° Longitude) in miles and kilometers?

The total circumference / length of International Date Line (approx. 180° Longitude) is approximately 20,003.93 km.

QHow many countries does International Date Line (approx. 180° Longitude) pass through?

International Date Line (approx. 180° Longitude) crosses through 1 sovereign nations and territories: Pacific Ocean (zig-zags around Kiribati, Fiji, Samoa, Tonga, and Aleutian Islands).

QWhat is the scientific significance of International Date Line (approx. 180° Longitude)?

Established to resolve the paradox of circumnavigation timekeeping first observed by Magellan's crew in 1522.

QHow does International Date Line (approx. 180° Longitude) divide the globe into hemispheres?

Lines of latitude parallel to the Equator define northern and southern solar declination belts across the Northern and Southern Hemispheres.

QHow do seasonal solstices and daylight hours relate to International Date Line (approx. 180° Longitude)?

Solar elevation angles across International Date Line (approx. 180° Longitude) govern solar culmination and seasonal daylight duration, determining tropical, temperate, or polar climatic zones.