View In:
ArcGIS Online Map Viewer
Name: Time Zones
Display Field: zone
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: The Time Zones dataset was compiled on October 04, 2019 and was updated on January 05, 2023 from the Bureau of Transportation Statistics (BTS) and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). This layer is a digital representation of the geographic boundaries of the nine time zones that cover the United States and its territories (the Atlantic, Eastern, Central, Mountain, Pacific, Alaska, Hawaii–Aleutian, Samoa, and Chamorro time zones). The U.S. Department of Transportation (DOT) oversees the Nation's time zones and the uniform observance of Daylight-Saving Time. The oversight of time zones was assigned to DOT due to the importance of time coordination for transportation related activities. The time zones were established by the Standard Time Act of 1918 and amended by the Uniform Time Act of 1966. Time zones in the U.S. are defined in the U.S. Code, Title 15, Chapter 6, Subchapter IX - Standard Time. The time zone boundaries are defined in the Code of Federal Regulations (CFR), Title 49, Subtitle A, Part 71 - Standard Time Zone Boundaries. Segments used to compile the geospatial layer were derived from the CFR’s time zone descriptions (https://www.ecfr.gov/current/title-49/subtitle-A/part-71). Descriptions consist of segments referencing administrative boundaries, infrastructure, natural features, and geodesic lines. These segments are contained in various data layers in the National Geospatial Data Asset (NGDA) portfolio, the federal government’s authoritative geospatial data repository. Referenced segments were extracted from their NGDA and then merged to form continuous boundaries. In instances where there were multiple scales for a given dataset, the largest scale or most detailed layer was used. The standard time of the Atlantic zone is the Coordinated Universal Time (UTC) minus 4 hours; Eastern zone is UTC minus 5 hours; Central zone is UTC minus 6 hours; Mountain zone is UTC minus 7 hours; Pacific zone is UTC minus 8 hours; Alaska zone is UTC minus 9 hours; Hawaii–Aleutian zone is UTC minus 10 hours; Samoa zone is UTC minus 11 hours; and Chamorro zone is UTC plus 10 hours. For more information, please visit: https://doi.org/10.21949/1519143.
Service Item Id: 3eb92f9d790747d78d4bfdcf574745e3
Copyright Text: NTAD datasets are intended for public usage and are not for sale/resale
Default Visibility: true
MaxRecordCount: 2000
Supported Query Formats: JSON, geoJSON, PBF
Min Scale: 0
Max Scale: 0
Supports Advanced Queries: true
Supports Statistics: true
Can Scale Symbols: false
Use Standardized Queries: true
Supports ValidateSQL: true
Supports Calculate: true
Extent:
XMin: -1.995191492562365E7
YMin: -1643352.0164283551
XMax: 2.0021886403103244E7
YMax: 1.1554348247643448E7
Spatial Reference: 102100
(3857)
Drawing Info:
Renderer:
Simple Renderer:
Symbol: Style: esriSFSSolid
Color: [244, 212, 252, 255]
Outline:
Style: esriSLSSolid
Color: [110, 110, 110, 255]
Width: 0
Label: N/A
Description: N/A
Transparency: 0
Labeling Info:
Advanced Query Capabilities:
Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: false
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: true
Supports Returning Geometry Centroid: true
Supports Binning LOD: true
Supports Query With LOD Spatial Reference: true
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: false
Supports Sql Format: false
Supports Query Analytic: true
Supports Query With Current User: true
HasZ: false
HasM: false
Has Attachments: false
HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText
Type ID Field:
Fields:
-
fid
(
nullable: false, defaultValue: null, editable: false, length: 4, type: esriFieldTypeOID, modelName: fid, alias: fid
)
-
zone
(
modelName: zone, nullable: true, editable: true, defaultValue: null, length: 80, alias: Zone, type: esriFieldTypeString
)
-
utc
(
modelName: utc, nullable: true, editable: true, defaultValue: null, length: 80, alias: UTC, type: esriFieldTypeString
)
-
SHAPE__Length
(
virtual: true, nullable: true, editable: false, defaultValue: null, alias: SHAPE__Length, type: esriFieldTypeDouble
)
-
SHAPE__Area
(
virtual: true, nullable: true, editable: false, defaultValue: null, alias: SHAPE__Area, type: esriFieldTypeDouble
)
Templates:
-
Name: Time Zones
Description:
Prototype:
Drawing Tool: esriFeatureEditToolPolygon
Capabilities: Query,Extract
Sync Can Return Changes: true
Is Data Versioned: false
Supports Rollback On Failure: true
Supports ApplyEdits With Global Ids: false
Supports ApplyEdits By Upload Id: true
Supports Query With Historic Moment: false
Supports Coordinates Quantization: true
Child Resources:
Field Groups
  
Contingent Values
Supported Operations:
Query
Query Attachments
Query Analytic
Query Top Features
Query Bins
Append
Validate SQL
Generate Renderer
Return Updates
Metadata
Update Metadata