international date line


Definition of international date line

: an arbitrary line approximately along the 180th meridian designated as the place where each calendar day begins

Examples of international date line in a Sentence

Recent Examples on the Web

Straddle the former international date line, and strap on your fins to explore the fantastic coral reefs offshore. National Geographic, "Fiji High School Community Service," 12 June 2019 This time around, my plan was to spend a long weekend indulging in a concentrated culinary tour of Asia — without having to cross the international date line. Taras Grescoe, New York Times, "The Best Asian Food in North America? Try British Columbia," 4 June 2018 Hurricanes are spawned east of the international date line. Washington Post, "Cyclone Mekunu nears Oman’s coast, kills 12-year-old girl," 25 May 2018 It is composed of about 20,000 sailors, and its territory stretches from the international date line west to the border between India and Pakistan. Jake Maxwell Watts, WSJ, "U.S. Navy Calls Off Sea Search For Missing USS John S. McCain Sailors," 25 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'international date line.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of international date line

1875, in the meaning defined above

Keep scrolling for more

Learn More about international date line

Statistics for international date line

Last Updated

25 Jun 2019

Look-up Popularity

Time Traveler for international date line

The first known use of international date line was in 1875

See more words from the same year

More from Merriam-Webster on international date line Encyclopedia article about international date line

Comments on international date line

What made you want to look up international date line? Please tell us where you read or heard it (including the quote, if possible).


appealing forcibly to the mind or reason

Get Word of the Day daily email!

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
True or False

Test your knowledge - and maybe learn something along the way.

Add Diction

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!