JSFiddle - React, Tailwind, and code Playground

JavaScript

window.console.clear();
var mything = [{
  "title": "Sample 1 Title",
  "Sample 1 Description": "",
  "headline": "Sample 1 Headline",
  "body": "",
  "date": "2016-01-17 5:30:00"
}, {
  "title": "Sample 2 Title",
  "Sample 2 Description": "",
  "headline": "Sample 2 Headline",
  "body": "",
  "date": "2016-01-22 7:45:17"
}, {
  "title": "Sample 3 Title",
  "Sample 3 Description": "",
  "headline": "Sample 3 Headline",
  "body": "",
  "date": "2016-01-27 15:26:17"
}, {
  "title": "Sample 3 Title",
  "Sample 3 Description": "",
  "headline": "Sample 4 Headline",
  "body": "",
  "date": "2016-01-29 18:00:00"
}];

var startDate = new Date("2016-01-27 15:26:17");
var dateLess = mything.filter(function(r) {
  console.log("r", r.date);
  var d = new Date(r.date);
  return d <= startDate;
});
console.log(JSON.stringify(dateLess));