dojo/date/stamp is a module that provides date handling functions for ISO-8601 standard formatting of date/time stamps. The standard return variable for this module is stamp.


Methods of dojo/date/stamp module use a profile of the ISO8601 as defined by [RFC3339] to handle dates in a way that is unambiguous, culturally and location independent, fast, and easily machine readable. The format is yyyy-MM-ddTHH:mm:ss.SSS where the fields do not all need to be specified, and either local time, GMT offset or “Zulu” may be used.


require(["dojo/date/stamp"], function(stamp){
  var date1 = new Date();
  var options = {
    selector: "date",
    zulu: true

  stamp.toISOString(date1, options);

  stamp.fromISOString("T23:59:59.999-04:00", date1);



Returns a Date object given a string formatted according to a subset of the ISO-8601 standard.


Argument Type Description
formattedString String A string such as 2005-06-30T08:05:00-07:00 or 2005-06-30 or T08:05:00
defaultTime Number? Used for defaults for fields omitted in the formattedString. Uses 1970-01-01T00:00:00.0Z by default.

The function returns a Date.


Format a Date object as a string according a subset of the ISO-8601 standard.


Argument Type Description
dateObject Date The Date to be converted
options Object? Optional argument Options on how the date should be formatted. Refer to the API documentation for full details

The function returns a String.


require(["dojo/date/stamp", "dojo/dom", "dojo/domReady!"],
function(stamp, dom){
    var date1 = new Date(2008, 9, 17);

    var output = stamp.toISOString(date1, {zulu: true}) + "</br>";

    output += stamp.toISOString(date1, {selector: 'date'}) + "<br/>";

    output += stamp.fromISOString("2008-10-17T00:00:00Z").toGMTString() + "<br/>";
    // note toGMTString output is implementation-dependent

    output += stamp.fromISOString("T23:59:59.999-04:00", new Date(2008,9,17)).toGMTString();

    dom.byId("output").innerHTML = output;
<div id="output"></div>
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