{
  "$schema": "https://developer.microsoft.com/json-schemas/sp/v2/column-formatting.schema.json",
  "elmType": "div",
  "style": {
    "padding": "10px"
  },
  "children": [
    {
      "elmType": "div",
      "style": {
        "position": "relative",
        "width": "50px",
        "height": "50px",
        "float": "left"
      },
      "inlineEditField": "@currentField",
      "children": [
        {
          "elmType": "div",
          "style": {
            "position": "absolute",
            "top": "2px",
            "left": "0",
            "width": "32px",
            "height": "24px"
          },
          "txtContent": "=if(getMonth(@currentField)==0, 'Jan', if(getMonth(@currentField)==1, 'Feb', if(getMonth(@currentField)==2, 'Mar', if(getMonth(@currentField)==3, 'Apr',  if(getMonth(@currentField)==4, 'May', if(getMonth(@currentField)==5, 'Jun', if(getMonth(@currentField)==6 , 'Jul', if(getMonth(@currentField)==7, 'Aug', if(getMonth(@currentField)==8 , 'Sep', if(getMonth(@currentField)==9, 'Oct', if(getMonth(@currentField)==10, 'Nov', if(getMonth(@currentField)==11, 'Dec', ''))))))))))))",
          "attributes": {
            "class": "ms-fontColor-themePrimary ms-borderColor-themePrimary ms-fontWeight-bold ms-fontSize-16 ms-fontColor-themeTertiary--hover"
          }
        },
        {
          "elmType": "div",
          "style": {
            "position": "absolute",
            "display": "flex",
            "justify-content": "center",
            "align-items": "center",
            "top": "25px",
            "left": "0",
            "width": "32px",
            "height": "25px",
            "border": "1px"
          },
          "txtContent": "=getDate(@currentField)",
          "attributes": {
            "class": "ms-fontColor-themePrimary ms-borderColor-themePrimary ms-fontWeight-bold ms-fontSize-20 ms-fontColor-themeTertiary--hover"
          }
        },
        {
          "elmType": "div",
          "style": {
            "position": "absolute",
            "top": "0",
            "left": "35px",
            "width": "10px",
            "height": "48px",
            "border": "1px"
          },
          "txtContent": "=getYear(@currentField)",
          "attributes": {
            "class": "ms-fontColor-themePrimary ms-borderColor-themePrimary ms-fontWeight-bold ms-fontSize-10 ms-fontColor-themeTertiary--hover"
          }
        }
      ]
    }
  ]
}