Need help! Want to plot x-axis month-day weekly wise and the the data on chart daily wise. Any way?

webix.ui({
    "type": "clean",
    "rows": [
      {
        "template": "<span class='webix_icon fa fa-bar-chart'></span>Cost across private clouds (MTD)",
        "css": "sub_title",
        "height": 30
      },
      {
        "view": "chart",
        "type": "line",
        "xAxis": {
          "template": "#xvalue#",
          "lines": false,
          "title": "Month-to-date"
        },
        "yAxis": {
          "lines": false,
          "title": "Cost (INR)"
        },
        "legend": {
          "values": [
            {
              "text": "GCP_test",
              "color": "#009CCC"
            },
            {
              "text": "vmware",
              "color": "#F58B1F"
            },
            {
              "text": "hypervtest",
              "color": "#FF7F8C"
            },
            {
              "text": "AWS",
              "color": "#8A4CA6"
            },
            {
              "text": "Azure connection",
              "color": "#FFD556"
            }
          ],
          "align": "right",
          "valign": "middle",
          "layout": "y"
        },
        "series": [
          {
            "value": "#gcp_test#",
            "item": {
              "borderColor": "#ffffff",
              "color": "#009CCC"
            },
            "line": {
              "color": "#009CCC"
            },
            "tooltip": {
              "template": "#gcp_test# INR"
            }
          },
          {
            "value": "#vmware#",
            "item": {
              "borderColor": "#ffffff",
              "color": "#F58B1F"
            },
            "line": {
              "color": "#F58B1F"
            },
            "tooltip": {
              "template": "#vmware# INR"
            }
          },
          {
            "value": "#hypervtest#",
            "item": {
              "borderColor": "#ffffff",
              "color": "#FF7F8C"
            },
            "line": {
              "color": "#FF7F8C"
            },
            "tooltip": {
              "template": "#hypervtest# INR"
            }
          },
          {
            "value": "#aws#",
            "item": {
              "borderColor": "#ffffff",
              "color": "#8A4CA6"
            },
            "line": {
              "color": "#8A4CA6"
            },
            "tooltip": {
              "template": "#aws# INR"
            }
          },
          {
            "value": "#azureconnection#",
            "item": {
              "borderColor": "#ffffff",
              "color": "#FFD556"
            },
            "line": {
              "color": "#FFD556"
            },
            "tooltip": {
              "template": "#azureconnection# INR"
            }
          }
        ],
        "data": [
          {
            "xvalue": "01-28",
            "gcp_test": "0",
            "vmware": "0",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "01-29",
            "gcp_test": "0",
            "vmware": "0",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "01-30",
            "gcp_test": "0",
            "vmware": "0",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "01-31",
            "gcp_test": "0",
            "vmware": "4.86",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-01",
            "gcp_test": "0",
            "vmware": "190.47",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-02",
            "gcp_test": "0",
            "vmware": "7.989999999999999",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-03",
            "gcp_test": "0",
            "vmware": "7.989999999999999",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-04",
            "gcp_test": "0",
            "vmware": "7.99",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-05",
            "gcp_test": "0",
            "vmware": "7.989999999999999",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-06",
            "gcp_test": "0",
            "vmware": "7.989999999999999",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-07",
            "gcp_test": "0",
            "vmware": "7.989999999999999",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-08",
            "gcp_test": "0",
            "vmware": "7.989999999999999",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-09",
            "gcp_test": "0",
            "vmware": "7.99",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-10",
            "gcp_test": "0",
            "vmware": "7.99",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-11",
            "gcp_test": "0",
            "vmware": "7.99",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-12",
            "gcp_test": "0",
            "vmware": "7.989999999999999",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-13",
            "gcp_test": "0",
            "vmware": "7.989999999999999",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-14",
            "gcp_test": "0",
            "vmware": "8.16",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-15",
            "gcp_test": "0",
            "vmware": "7.989999999999999",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-16",
            "gcp_test": "0",
            "vmware": "7.989999999999999",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          },
          {
            "xvalue": "02-17",
            "gcp_test": "0",
            "vmware": "7.989999999999999",
            "hypervtest": "0",
            "aws": "0",
            "azureconnection": "0"
          }
        ]
      }
    ],
    "id": "costacrossprivateclouds"
});

It is possible to achieve the needed appearance using xAxis template as a function which will return the labels depending on any condition.
The following code uses Webix date-related methods and native Date API to get the start of the week (Sunday) and compare it to the date got from the labels:

https://snippet.webix.com/bgk6ufxr

In general, there is plenty of methods in Webix to format the dates in the needed way.
However, more complex rules of date comparison may require usage of the native JS API for Date objects.