History of the Date LineStories, maps and documents

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Stories and places of the International Date Line

Choose a story to find out what happened, where and why. Each page links to documents and points out what remains uncertain.

Places and calendar changes

Samoa

The Friday that disappeared from the calendar.

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Kiribati

One country, several island groups and a shared date.

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The Philippines

How the calendar count changed in 1844.

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Ideas, maps and discoveries

Greenwich and the 180° meridian

Why we need a reference to measure the world.

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Morrell and Byers: phantom islands

A bend that disappeared from the charts.

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Explore all stages and variants in the map explorer →