Establishing the ISO date time to the beginning of the day

When working with a Date retrieved from a Mongo query in ISO format, the goal is to compare it with today's date. To accomplish this, a new Date is created and its time is set to zero:

var today = new Date();
today.setHours(0,0,0,0); //Sat Jan 20 2018 00:00:00 GMT-0800 (PST)

While this method sets the time to zero, the issue arises when converting it to an ISO string for comparison:

console.log(today.toISOString()); //2018-01-20T08:00:00.000Z

The hour remains at 08 instead of being set to zero. This discrepancy makes setting the hour to zero challenging.

javascriptmongodbdate

Answer №1

let currentDate = new Date();
currentDate.setUTCHours(0,0,0,0);

document.getElementById('date').innerHTML = currentDate.toISOString();
<label>Current Date: (ISO String)</label>
<div id="date">
<div>

currentDate.setUTCHours(0,0,0,0);

This code snippet will set the UTC hours to midnight for the current date and display it in ISO format.

Answer №2

The solution provided above is accurate. I was assigned the task of identifying bookings for the present, past, and future dates by querying the MongoDB database. By utilizing the ISO String method mentioned above, I successfully resolved the issue at hand. Much gratitude for your assistance.

 const { past, present, future } = req.query;

  let today = new Date();
  today.setUTCHours(0, 0, 0, 0);
  today.toISOString();

  let bookings;

  if (past === 'past') {
    bookings = await Booking.find({
      booking_user: req.user.userId,
      booking_checkin: { $lt: today },
    }).sort('-booking_status : cancelled');
  } else if (present === 'present') {
    bookings = await Booking.find({
      booking_user: req.user.userId,
      booking_checkin: { $eq: today },
    }).sort('-booking_status : cancelled');
  } else if (future === 'future') {
    bookings = await Booking.find({
      booking_user: req.user.userId,
      booking_checkin: { $gt: today },
    }).sort('-booking_status : cancelled');
  } else {
    bookings = await Booking.find({
      booking_user: req.user.userId,
    }).sort('-booking_status : cancelled');
  }

  res.status(StatusCodes.OK).json({ count: bookings.length, bookings });

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