JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://rawgit.com/masayuki0812/c3/master/c3.js"></script>
<link rel="stylesheet" href="https://rawgit.com/masayuki0812/c3/master/c3.css">
<div id="chart"></div>

JavaScript

var d = (30 * 24 * 3600); // last 30 days

var array_times = [1414540800, 1414627200, 1414627200 + d, 1414627200 + 2 * d, 1414627200 + 3 * d, ];
var array_values = [67, 66.22, 68, 68, 68];

var labelWeight = 'weight in kg';

var window_period = (30 * 24 * 3600); // last 30 days

var today = Math.floor(new Date(2014, 10, 20, 0, 0, 0, 0).getTime() / 1000);
var timeEnd = today;
var timeStart = today - window_period;


var minT = Math.min.apply(null, array_times),
    maxT = Math.max.apply(null, array_times.concat(today));

var minV = Math.min.apply(null, array_values),
    maxV = Math.max.apply(null, array_values);

function dateToString(e) {
    var date = new Date(e * 1000);
    return date.toDateString().substring(4);
}


var chart = c3.generate({
    bindto: '#chart',
    data: {
        x: 'times',
        columns: [
            ['times'].concat(array_times), [labelWeight].concat(array_values)],
        labels: {
            format: {
                y: d3.format('.2')
            }
        },
        type: 'scatter'
    },
    point: {
        r: 6
    },
    legend: {
        show: false
    },
    grid: {
        x: {
            show: true
        },
        y: {
            show: true
        }
    },
    axis: {
        x: {
            label: {
                text: 'Time [days]'
            },
            type: 'timeseries',
            tick: {
                fit: false,
                //count: 29,
                rotate: -75,
                multiline: false,
                format: function (e, d) {
                    return dateToString(e);
                }
            },
            height: 100
        },
        y: {
            label: {
                text: 'Weight [kg]',
                position: 'outer',
                min: minV - 10,
                max: maxV + 10
            },
            tick: {
                format: function (e, d) {
                    return parseFloat(e).toFixed(2);
                }
            }
        }
   ...