parsing - The correct Javascript Date.parse(...) format string? - Stack Overflow

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What is a culture-invariant way of constructing a string such that the Javascript Date() constructor can parse it and create the proper date object?

I have tried these format strings which don't work (using C# to generate the strings):

clientDate.ToString();
// gives: "11/05/2009 17:35:23 +00:00"

clientDate.ToString("MMM' 'dd', 'yyyy' 'h':'mm':'ss' 'tt");
// works on an English server
// but on a French server, gives: "mai 11, 2009 5:35:23"
// Javascript won't parse that.

clientDate.ToString("MM'-'dd'-'yyyy' 'HH':'mm':'ss")
// gives: 05-11-2009 17:35:23

What is the universal format??

What is a culture-invariant way of constructing a string such that the Javascript Date() constructor can parse it and create the proper date object?

I have tried these format strings which don't work (using C# to generate the strings):

clientDate.ToString();
// gives: "11/05/2009 17:35:23 +00:00"

clientDate.ToString("MMM' 'dd', 'yyyy' 'h':'mm':'ss' 'tt");
// works on an English server
// but on a French server, gives: "mai 11, 2009 5:35:23"
// Javascript won't parse that.

clientDate.ToString("MM'-'dd'-'yyyy' 'HH':'mm':'ss")
// gives: 05-11-2009 17:35:23

What is the universal format??

• javascript
• parsing
• date
• string-formatting

Share Improve this question Follow asked Jul 6, 2009 at 19:24 Jeff Meatball YangJeff Meatball Yang 39k2727 gold badges9393 silver badges125125 bronze badges 3

• good question, this is a tough problem – annakata Commented Jul 6, 2009 at 19:38
• Why do you want a single string for that? – Boldewyn Commented Jul 6, 2009 at 19:56
• I need to emit a string to the browser so I can then use Javascript to localize the string, using Javascript's toLocaleString() function. However, I've had difficulty figuring out a successful, single string format that will be emitted by all my servers. – Jeff Meatball Yang Commented Jul 6, 2009 at 21:00

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2 Answers 2

Sorted by: Reset to default 19

According to MDC:

Given a string representing a time, parse returns the time value. It accepts the IETF standard (RFC 1123 Section 5.2.14 and elsewhere) date syntax: "Mon, 25 Dec 1995 13:30:00 GMT". It understands the continental US time-zone abbreviations, but for general use, use a time-zone offset, for example, "Mon, 25 Dec 1995 13:30:00 GMT+0430" (4 hours, 30 minutes east of the Greenwich meridian). If you do not specify a time zone, the local time zone is assumed. GMT and UTC are considered equivalent.

If you can’t generate this format using english locale, try to use Date.UTC

If you want a locale-independent format Javascript can parse, you can use 2013-03-31T16:36:57+0900. It works at least in Node.js and Chrome, so I suspect it's standard.

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