Is it possible to convert a UTC timestamp to a local time timestamp using any function or method?
I am sending the timestamp to angular moments, but the server's timestamp is in UTC.
Is it possible to convert a UTC timestamp to a local time timestamp using any function or method?
I am sending the timestamp to angular moments, but the server's timestamp is in UTC.
It's important to note that a JavaScript timestamp, obtained from Date.now() or date.getTime(), does not have any timezone information associated with it. It represents the number of milliseconds passed since 1 January 1970 00:00:00 UTC. In JavaScript, there is no concept of a local timestamp. To convert a timestamp into a date using the local timezone of the machine, you can simply do the following:
let myTimestamp = Date.now();
let dateInLocalTimezone = new Date(myTimestamp);
It's a bit ambiguous whether you are asking about parsing, formatting, or both within angular.js or ionic-framework when it comes to converting a UTC timestamp to a local time timestamp. The below explanation is based on plain ECMAScript.
Is there a function or method available for converting a UTC timestamp to a local time timestamp?
Indeed, there is. However, the method used depends on the format of the timestamp. If it's in ISO 8601 extended format like "2017-03-20T15:45:06Z," modern browsers can parse it using either the Date constructor (to create a Date object) or Date.parse (to produce a time value).
If the timestamp is in any other format, manual parsing is required, which can be done through a small custom function or library.
Once a Date object is obtained, it can be formatted in the host timezone using Date methods. For more information on date formatting in JavaScript, refer to Where can I find documentation on formatting a date in JavaScript?
For example:
var s = "2017-03-20T12:00:00Z"
var d = new Date(s);
// Browser default, implementation dependent
console.log(d.toString());
// Use toLocaleString with options, implementation dependent and problematic
console.log(d.toLocaleString(undefined,{
weekday: 'long',
day: 'numeric',
month: 'long',
year: 'numeric',
hour: '2-digit',
hour12: false,
minute: '2-digit',
second: '2-digit'
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