OSM Edits by Second of the Day

<!DOCTYPE html>
<meta charset="utf-8">
<style>

body {
  font: 10px sans-serif;
}

.axis path,
.axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}

.bar {
  fill: steelblue;
}

.x.axis path {
  display: none;
}

</style>
<body>
<script src="https://d3js.org/d3.v3.min.js"></script>
<script>

var margin = {top: 20, right: 20, bottom: 30, left: 40},
    width = 960 - margin.left - margin.right,
    height = 420 - margin.top - margin.bottom;

var x = d3.scale.linear()
    .range([0, width]);

var y = d3.scale.linear()
    .range([height, 0]);

var xAxis = d3.svg.axis()
    .scale(x)
    .ticks(12)
    .orient("bottom")
    .tickFormat(function(d) {
        var hrs = Math.floor(d/60);
        var mins = d % 60;
        return hrs + ':' + mins;
    });

var yAxis = d3.svg.axis()
    .scale(y)
    .orient("left");

var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

d3.json("timehist.json", function(error, data) {

var data = d3.entries(data).map(function(d) {
      return {
          sec: +d.key,
          count: +d.value
      };
  });

x.domain([0, d3.max(data, function(d) { return d.sec; })]);
  y.domain([0, d3.max(data, function(d) { return d.count; })]);

svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis);

svg.append("g")
      .attr("class", "y axis")
      .call(yAxis)
    .append("text")
      .attr("transform", "rotate(-90)")
      .attr("y", 6)
      .attr("dy", ".71em")
      .style("text-anchor", "end")
      .text("Commits");

d3.select('#tz')
    .on('change', function() {
        draw(this.value * 60);
    })
    .selectAll('option')
    .data(d3.range(0, 24))
    .enter()
    .append('option')
        .text(String)
        .attr('value', String);
});

</script>
<br />timezone offset from UTC <select id='tz'>
</select>

Modified http://d3js.org/d3.v3.min.js to a secure url

https://d3js.org/d3.v3.min.js