How to get current moment in ISO 8601 format with date, hour, and minute?
Use SimpleDateFormat
to format any Date
object you want:
TimeZone tz = TimeZone.getTimeZone("UTC");
DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm'Z'"); // Quoted "Z" to indicate UTC, no timezone offset
df.setTimeZone(tz);
String nowAsISO = df.format(new Date());
Using a new Date()
as shown above will format the current time.
How to print the current time and date in ISO date format in java?
In java 8 you can use the new java.time
api:
OffsetDateTime now = OffsetDateTime.now();
DateTimeFormatter formatter = DateTimeFormatter.ISO_DATE_TIME;
System.out.println(formatter.format(now)); // e.g. 2018-04-30T08:43:41.4746758+02:00
The above uses the standard ISO data time formatter. You can also truncate to milliseconds with:
OffsetDateTime now = OffsetDateTime.now().truncatedTo(ChronoUnit.MILLIS);
Which yields something like (only 3 digits after the dot):
2018-04-30T08:54:54.238+02:00
formating iso 8601 to MMM and hourPM/AM using moment js
You need to pass it the string as YYYY:MM:DDTHH:MM:SS
:
const getDateFormatted = str => {
const date = str.slice(0,19);
return moment(date).format("MMM DD - h a");
}
console.log( getDateFormatted("2021-01-16T03:00:000Z") );
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.29.1/moment.min.js" integrity="sha512-qTXRIMyZIFb8iQcfjXWCO8+M5Tbc38Qi5WzdPOYZHIlZpzBHG3L3by84BBBOiRGiEb7KKtAOAs5qYdUiZiQNNQ==" crossorigin="anonymous"></script>
How do I format a date as ISO 8601 in moment.js?
moment().toISOString(); // or format() - see below
http://momentjs.com/docs/#/displaying/as-iso-string/
Update
Based on the answer: by @sennet and the comment by @dvlsg (see Fiddle) it should be noted that there is a difference between format
and toISOString
. Both are correct but the underlying process differs. toISOString
converts to a Date object, sets to UTC then uses the native Date prototype function to output ISO8601 in UTC with milliseconds (YYYY-MM-DD[T]HH:mm:ss.SSS[Z]
). On the other hand, format
uses the default format (YYYY-MM-DDTHH:mm:ssZ
) without milliseconds and maintains the timezone offset.
I've opened an issue as I think it can lead to unexpected results.
How to ISO 8601 format a Date with Timezone Offset in JavaScript?
Here's a simple helper function that will format JS dates for you.
function toIsoString(date) {
var tzo = -date.getTimezoneOffset(),
dif = tzo >= 0 ? '+' : '-',
pad = function(num) {
return (num < 10 ? '0' : '') + num;
};
return date.getFullYear() +
'-' + pad(date.getMonth() + 1) +
'-' + pad(date.getDate()) +
'T' + pad(date.getHours()) +
':' + pad(date.getMinutes()) +
':' + pad(date.getSeconds()) +
dif + pad(Math.floor(Math.abs(tzo) / 60)) +
':' + pad(Math.abs(tzo) % 60);
}
var dt = new Date();
console.log(toIsoString(dt));
How to parse ISO 8601 into date and time format using Moment js in Javascript?
With moment.js
var str = '2011-04-11T10:20:30Z';
var date = moment(str);
var dateComponent = date.utc().format('YYYY-MM-DD');
var timeComponent = date.utc().format('HH:mm:ss');
console.log(dateComponent);
console.log(timeComponent);
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.15.1/moment.min.js"></script>
How do I output an ISO 8601 formatted string in JavaScript?
There is already a function called toISOString()
:
var date = new Date();
date.toISOString(); //"2011-12-19T15:28:46.493Z"
If, somehow, you're on a browser that doesn't support it, I've got you covered:
if (!Date.prototype.toISOString) {
(function() {
function pad(number) {
var r = String(number);
if (r.length === 1) {
r = '0' + r;
}
return r;
}
Date.prototype.toISOString = function() {
return this.getUTCFullYear() +
'-' + pad(this.getUTCMonth() + 1) +
'-' + pad(this.getUTCDate()) +
'T' + pad(this.getUTCHours()) +
':' + pad(this.getUTCMinutes()) +
':' + pad(this.getUTCSeconds()) +
'.' + String((this.getUTCMilliseconds() / 1000).toFixed(3)).slice(2, 5) +
'Z';
};
}());
}
console.log(new Date().toISOString())
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