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  1. The International Date Line - timeanddate.com

    Dec 30, 2011 · The International Date Line is also known as the “Line of Demarcation” because it separates two calendar dates. When you cross the date line traveling east, you subtract a day, and if …

  2. Time Zone Map - timeanddate.com

    If you place more than one pin, an extra line of information is added underneath the map with links to those cities' pages. You may add as many pins as you like. To remove the pins permanently (undo …

  3. What Is Longitude and Latitude? - timeanddate.com

    Today, the meridian line through Greenwich, England, is considered as the reference point for longitudes. This line is also known as the Prime Meridian. The Prime Meridian is set as 0° longitude …

  4. Why Were Time Zones Created? - timeanddate.com

    The International Meridian Conference in Washington DC, USA, adopted a proposal in October 1884. The proposal stated that the prime meridian for longitude and timekeeping should be one that passes …

  5. What Is a Time Zone? - timeanddate.com

    However, the actual borders on the time zone map have been drawn to match up with both internal and international borders, and rarely match up exactly with the 15-degree longitudes. Also, the …

  6. Time Zones in Kiribati

    In 1994, Kiribati decided to move the International Date Line, and they did it by skipping January 1, 1995 in the country's two eastern island groups. By adding 24 hours to the time zones on the Phoenix and …

  7. Articles About Timekeeping - timeanddate.com

    Jun 29, 2022 · What Is 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 …

  8. How Many Time Zones in the World? - timeanddate.com

    The actual borders on a time zone map have been drawn to correspond with both internal and international borders, and rarely match up exactly with the 15-degree time zone borders.

  9. Flights That Land Before You Leave - timeanddate.com

    Running through the mid-Pacific Ocean, the International Date Line is positioned halfway around the world from the prime meridian (0° longitude), which is centered on Greenwich in the UK. Crossing …

  10. What is the Equator? - timeanddate.com

    The equator is an imaginary line dividing Earth into the Northern and Southern Hemispheres. It is located halfway between the North and South poles.