code: function msDiff(t1, t2) {
    t1 = (t1[0] * 1e9 + t1[1]) / 1e6;
    t2 = (t2[0] * 1e9 + t2[1]) / 1e6;
    return Math.ceil((t1 - t2) * 100) / 100;
  }
docs: Retrieve difference in ms
  @param {Array} t1
  @param {Array} t2
  @returns {Number}