Critical-Thinking-in-JavaScript/binning.js at main · rashedulraha/Critical-Thinking-in-JavaScript · GitHub

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// Binning (resampling) Time series data
const events = [
  { timestamp: 1714123200000, type: "login" },
  { timestamp: 1714126800000, type: "logout" },
  { timestamp: 1714130400000, type: "purchase" },
  { timestamp: 1714134000000, type: "login" },
  { timestamp: 1714137600000, type: "view" },
  { timestamp: 1714141200000, type: "purchase" },
  { timestamp: 1714144800000, type: "logout" },
  { timestamp: 1714148400000, type: "login" },
  { timestamp: 1714152000000, type: "view" },
  { timestamp: 1714155600000, type: "purchase" },
];

const INTERVAL = 30 * 60 * 1000;

const binningTimeStamp = (timestamp) => {
  const date = new Date(timestamp);

  // console.log(timestamp);
  // console.log(data.getTime());

  const floorDate = Math.floor(date.getTime() / INTERVAL) * INTERVAL;
  console.log(floorDate);
};
``;

binningTimeStamp("2025-10-22T10:01:00Z");