javascript - Chrome not recognizing 24:00:00 while Firefox does - Stack Overflow

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The following code outputs outputs NaN in Chrome while Firefox generates 1247547600000.

var str = "2009/07/13 24:00:00-0500";
document.write(Date.parse(str));

See this fiddle.

How to solve this? Thank you!

EDIT: I've got the data from another pany. I cannot change the data it generates. So What are the suggestions here?

The data generated:

{"day":"2009-07-13", "work":["11:16:35-12:03:12", "12:32:48-13:26:28", "13:39:09-13:39:12", "13:41:03-13:41:05", "14:18:09-24:00:00"]},
{"day":"2009-07-14", "work":["00:00:00-07:22:25", "07:22:25-07:22:28", "10:10:04-10:10:31", "10:10:32-10:15:33", "10:18:07-10:21:19", "11:04:49-11:06:15", "11:12:50-11:19:05", "11:19:11-11:19:19", "11:45:50-11:51:42", "11:51:43-11:53:55", "14:03:13-14:13:04", "14:23:55-14:31:28", "14:31:28-14:38:00", "14:38:00-14:49:04", "16:34:56-16:44:33", "16:46:37-16:48:10", "16:48:11-24:00:00"]}

The following code outputs outputs NaN in Chrome while Firefox generates 1247547600000.

var str = "2009/07/13 24:00:00-0500";
document.write(Date.parse(str));

See this fiddle.

How to solve this? Thank you!

EDIT: I've got the data from another pany. I cannot change the data it generates. So What are the suggestions here?

The data generated:

{"day":"2009-07-13", "work":["11:16:35-12:03:12", "12:32:48-13:26:28", "13:39:09-13:39:12", "13:41:03-13:41:05", "14:18:09-24:00:00"]},
{"day":"2009-07-14", "work":["00:00:00-07:22:25", "07:22:25-07:22:28", "10:10:04-10:10:31", "10:10:32-10:15:33", "10:18:07-10:21:19", "11:04:49-11:06:15", "11:12:50-11:19:05", "11:19:11-11:19:19", "11:45:50-11:51:42", "11:51:43-11:53:55", "14:03:13-14:13:04", "14:23:55-14:31:28", "14:31:28-14:38:00", "14:38:00-14:49:04", "16:34:56-16:44:33", "16:46:37-16:48:10", "16:48:11-24:00:00"]}

• javascript
• jquery
• datetime

Share Improve this question Follow edited Jul 19, 2012 at 15:47 sozhen asked Jul 19, 2012 at 15:13 sozhensozhen 7,6771414 gold badges3838 silver badges5353 bronze badges 3

• 2 Post the code here, not just in the fiddle. – epascarello Commented Jul 19, 2012 at 15:14
• 9 well, technically there is no 24:00 - it's 0:00 of the next day. – Christoph Commented Jul 19, 2012 at 15:15
• possible duplicate of Ecmascript 5 Date.parse for ISO 8601 test cases – epascarello Commented Jul 19, 2012 at 15:18

Add a ment  | 

3 Answers 3

Sorted by: Reset to default 7

Just had this problem and researched it.

According to Wikipedia: (see http://en.wikipedia/wiki/ISO_8601 )

Midnight is a special case and can be referred to as both "00:00" and "24:00". The notation "00:00" is used at the beginning of a calendar day and is the more frequently used. At the end of a day use "24:00". Note that "2007-04-05T24:00" is the same instant as "2007-04-06T00:00" (see Combined date and time representations below).

So it seems Chrome is wrong.

You are asking the browser to parse an invalid time. 24:00 isn't valid. You probably mean 0:00 of the next day. Chrome is correct in rejecting it. Firefox is simply more forgiving.

Consider that there are 24 hours in the day. If the first hour is 00, then the last hour is 23.

Chrome is right, 24:00 doesn't exists. The day ends at 23:59:59, and then the next day starts on 00:00:00. Your code should not generate dates with 24:00:00, 'cause you have no guarantee of how it is interpreted by the browser or even if it works, now and in the future.

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