@openstreetmap/id-tagging-schema/data/fields/check_date.json

The OpenStreetMap tagging model used by the iD editor

{
    "key": "check_date",
    "type": "date",
    "label": "Last Checked Date",
    "placeholder": "YYYY-MM-DD",
    "universal": true,
    "terms": [
        "last survey date",
        "survey date"
    ]
}