NOAA provides a geographic dataset defining the Antimeridian, the +/-180 degree line of longitude opposite the Prime Meridian. This line forms the basis for the International Date Line, which is simplified here as it passes through the Pacific Ocean. The dataset is maintained by the National Oceanic and Atmospheric Administration and was last updated in January 2025.
Use Cases
- Spatial analysis of the Antimeridian's path using WMS or WFS service layers
- Geographic reference for simplifying the International Date Line in global mapping systems
- Integration with Pacific Islands Ocean Observing System (Pacioos) data for regional boundary studies
Strengths
- Authoritative source from the National Oceanic and Atmospheric Administration (NOAA)
- Recently updated in January 2025
- Includes service formats (WMS, WFS) for direct geospatial integration
Limitations
- Dataset size, row count, and specific columns are unknown
- Represents a simplification of the actual, more complex International Date Line
- Limited descriptive metadata available for assessment
Provenance
- Source
- National Oceanic and Atmospheric Administration, Department of Commerce
- Collection Method
- null
- Time Range
- null
- Freshness
- Last updated 2025-01-27.
- Geography
- Global