Converting a string into a Date in Typescript while disregarding the timezone

Question

Converting a string into a Date in Typescript while disregarding the timezone

Upon receiving a date in string format like this (e.g.):

"11/10/2015 10:00:00"

It's important to note that this is in UTC time.

However, when creating a Date object from this string, it defaults to local time:

let time = "11/10/2015 10:00:00";
let date = new Date(time); 
console.log(date);

Resulting in:

"Tue Nov 10 2015 10:00:00 GMT+0200"

Instead of interpreting it as UTC: "Tue Nov 10 2015 10:00:00")

Attempts with moment.js were also made, but to no avail.

Is there an effective method to have Date() recognize the string as UTC without appending "Z"/"UTC"/"+000" at the end?

javascript typescript date momentjs

Answer 1

Answer №1

If you're looking to convert a date string to UTC format, you can utilize the Date.UTC() function which is built-in. Below is a simple function that will help you achieve this conversion based on the format provided in your initial post:

let dateTime = "11/10/2015 10:00:00";

function getUTCDateString(dateString) {
  // The expected dateString format is "MM/DD/YYYY HH:mm:ss"
  var [date, time] = dateString.split(" ");
  var [month, day, year] = date.split("/");
  var [hours, minutes, seconds] = time.split(":");
  // Since months are 0 indexed in Date operations, we adjust by subtracting 1 while converting to a Date object
  return new Date(Date.UTC(year, month - 1, day, hours, minutes, seconds)).toUTCString();
}

console.log(getUTCDateString(dateTime));

Answer 2

If you're looking to convert a date string to UTC format, you can utilize the Date.UTC() function which is built-in. Below is a simple function that will help you achieve this conversion based on the format provided in your initial post:

let dateTime = "11/10/2015 10:00:00";

function getUTCDateString(dateString) {
  // The expected dateString format is "MM/DD/YYYY HH:mm:ss"
  var [date, time] = dateString.split(" ");
  var [month, day, year] = date.split("/");
  var [hours, minutes, seconds] = time.split(":");
  // Since months are 0 indexed in Date operations, we adjust by subtracting 1 while converting to a Date object
  return new Date(Date.UTC(year, month - 1, day, hours, minutes, seconds)).toUTCString();
}

console.log(getUTCDateString(dateTime));

Answer 3

Answer №2

When processing your date, the date constructor will recognize it in MM/DD/YYYY format and adjust for the local timezone offset, resulting in an output that represents midnight at the start of the day. To convert this local time to UTC, simply subtract the timezone offset...

var myDate = new Date("11/10/2015 10:00:00");
myDate = new Date( myDate.getTime() - (myDate.getTimezoneOffset()*60*1000));
console.log(myDate.toLocaleString([],{timeZone:'UTC'}))

Here's my comprehensive guide on how to manage timezones while serializing and deserializing dates. Keep in mind that JS dates do not have a built-in timezone.

Answer 4

When processing your date, the date constructor will recognize it in MM/DD/YYYY format and adjust for the local timezone offset, resulting in an output that represents midnight at the start of the day. To convert this local time to UTC, simply subtract the timezone offset...

var myDate = new Date("11/10/2015 10:00:00");
myDate = new Date( myDate.getTime() - (myDate.getTimezoneOffset()*60*1000));
console.log(myDate.toLocaleString([],{timeZone:'UTC'}))

Here's my comprehensive guide on how to manage timezones while serializing and deserializing dates. Keep in mind that JS dates do not have a built-in timezone.

Answer 5

Answer №3

An effortless solution is to simply add a "Z" at the end of the time variable:

let timestamp = "11/10/2015 10:00:00";  
let dateTime = new Date(timestamp + "Z");  
console.log(dateTime);

Answer 6

An effortless solution is to simply add a "Z" at the end of the time variable:

let timestamp = "11/10/2015 10:00:00";  
let dateTime = new Date(timestamp + "Z");  
console.log(dateTime);

Answer 7

Answer №4

If you want to convert a date to another timezone in JavaScript, you can use Date.UTC method, but you will need to parse the string and pass each part as arguments manually since it cannot process such strings. Alternatively, you can utilize moment.js for parsing. Check out this resource for more information: Convert date to another timezone in JavaScript

It appears that using new Date("11/10/2015 10:00:00 GMT") will first interpret the date as GMT and then convert it to the local time of the PC.

Answer 8

If you want to convert a date to another timezone in JavaScript, you can use Date.UTC method, but you will need to parse the string and pass each part as arguments manually since it cannot process such strings. Alternatively, you can utilize moment.js for parsing. Check out this resource for more information: Convert date to another timezone in JavaScript

It appears that using new Date("11/10/2015 10:00:00 GMT") will first interpret the date as GMT and then convert it to the local time of the PC.

Converting a string into a Date in Typescript while disregarding the timezone

Answer №1

Answer №2

Answer №3

Answer №4

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