day, day (unit)

{
    "$id": "https://schemas.optimade.org/defs/v1.2/units/si/1970/accepted/day",
    "$schema": "https://schemas.optimade.org/meta/v1.2/optimade/physical_unit_definition.json",
    "title": "day",
    "symbol": "day",
    "display-symbol": "day",
    "alternate-symbols": [
        "d"
    ],
    "description": "A unit of time equal to 86 400 seconds, using the 1967 base SI units.\n\nThe day unit appears in the International System of Units (SI), 1st ed. (1970) defined as \"1 d = 24 h = 86400 s\".\n\n- The International System of Units (SI), 1st ed. (1970) categorizes the unit as \"Units in use with the International System.\"\n- The International System of Units (SI), 7th ed. (1998) changes the categorization to \"Non-SI units accepted for use with the International System.\"",
    "resources": [
        {
            "relation": "Definition in the International System of Units (SI), 1st Edition",
            "resource-id": "https://www.bipm.org/en/publications/si-brochure"
        },
        {
            "relation": "Wikipedia article describing the unit",
            "resource-id": "https://en.wikipedia.org/wiki/Day"
        }
    ],
    "defining-relation": {
        "base-units": [
            {
                "symbol": "s",
                "id": "https://schemas.optimade.org/defs/v1.2/units/si/1960/base/second"
            }
        ],
        "base-units-expression": "s",
        "scale": {
            "numerator": 86400
        }
    },
    "x-optimade-definition": {
        "label": "day_si_1970_accepted",
        "kind": "unit",
        "format": "1.2",
        "version": "1.2.0",
        "name": "day"
    }
}