Antimeridian

The Antimeridian is the +/-180 degree line of longitude, exactly opposite the Prime Meridian. It is often used as the basis for the International Date Line (IDL) because it passes through the open waters of the Pacific Ocean. However, this is a simplification of the actual IDL, which curtails several countries.

Data and Resources

Field Value
access_constraints []
bbox-east-long 180.0001
bbox-north-lat 90.0001
bbox-south-lat -90.0001
bbox-west-long 179.9999
contact-email info@pacioos.org
coupled-resource [{"href": ["#DataIdentification"], "uuid": [], "title": []}, {"href": ["#DataIdentification"], "uuid": [], "title": []}, {"href": ["#DataIdentification"], "uuid": [], "title": []}]
dataset-reference-date [{"type": "creation", "value": "2016-01-25"}, {"type": "issued", "value": "2016-01-25"}, {"type": "revision", "value": "2016-01-25"}]
graphic-preview-description Sample image.
graphic-preview-file http://pacioos.org/metadata/browse/world_antimeridian.png
guid world_antimeridian
licence []
metadata-date 2021-03-30
metadata-language eng
metadata_type geospatial
old-spatial {"type": "Polygon", "coordinates": [[[179.9999, -90.0001], [180.0001, -90.0001], [180.0001, 90.0001], [179.9999, 90.0001], [179.9999, -90.0001]]]}
resource-type dataset
responsible-party [{"name": "Pacific Islands Ocean Observing System (PacIOOS)", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[179.9999, -90.0001], [180.0001, -90.0001], [180.0001, 90.0001], [179.9999, 90.0001], [179.9999, -90.0001]]]}
spatial-data-service-type Open Geospatial Consortium Web Feature Service (WFS)
spatial_harvester true
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • boundaries
  • ckan
  • earth-science
  • geo
  • geographic-region
  • geoss
  • global
  • human-dimensions
  • national
  • north-america
  • pacific-islands-ocean-observing-system
  • pacioos
  • united-states
isopen False
metadata_created 2025-11-22T14:53:57.299030
metadata_modified 2025-11-22T14:53:57.299035
notes The Antimeridian is the +/-180 degree line of longitude, exactly opposite the Prime Meridian. It is often used as the basis for the International Date Line (IDL) because it passes through the open waters of the Pacific Ocean. However, this is a simplification of the actual IDL, which curtails several countries.
num_resources 15
num_tags 15
title Antimeridian