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Test Valid Date String for JavaScript

Créé 2013-05-31 20:44:00
Mise à jour 2023-11-22 15:29:06

Here we check the valid strings for the argument of the Date:: class constructor to create Date object under JavaScript, ie,
<script type="text/javascript">
var objDate;
objDate = new Date("Jun 07, 2025 01:38:19 GMT+0200");
<script>
We are trying to get the PHP date format string to format date time to form the pipeline PHP DateTime() => js Date() => document.write() to output on screen. Here is the summary of cases we tested for you:
#js new Date() FeedIEChromeFirefoxSafariOperaMobile
0Jun 07, 2025 01:38:19 GMT+0200++++++
1Jun 07 2025 01:38:19 GMT+0200++++++
2Jun 07, 2025 01:38:19 GMT+2++++++
32025-06-07 01:38:19 GMT+0200-+--++
42025-06-07 01:38:19 GMT+02:00-+--++
52025-06-07 01:38:19 GMT+200-+--++
607 Jun 2025 01:38:19+02:00-+----
7Jun 07 2025 01:38:19 GMT+2:00-++-++
8Jun 07, 2025 01:38:19 GMT+02:00-++-++
92025-06-07 01:38:19 GMT+2-+--++
102025-06-07 01:38:19-+--++
112025-06-07T01:38:19+02:00+++++-
122025-06-07 01:38:19+02:00-+----
1306-07-2025 01:38:19 GMT+0200++---+
1406/07, 2025 01:38:19 GMT+0200+++-++
1507-Jun-2025 01:38:19 GMT+0200-+-+-+
Tab. I: + Valid Date Time String for Javascript::Date() class, - Invalid.

JavaScript is very English speaking. In effect, among the 3 first universal formats, the English month abbreviation is used. As it can be observed that no pure numerical date string is found like "2025-06-07 01:38:19" to fit JavaScript syntax in all browsers. Please check this with your preferred browser.

Detail of JavaScript Tests

Below, the bold date time outputs at the right hand side of => are the JavaScript Date Class results.

0. Good Format "mmm dd, yyyy hh:mm:ss GMT+0200"

For example, Jun 07, 2025 01:38:19 GMT+0200 => Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
0Jun 07, 2025 01:38:19 GMT+0200++++++

This format is valid for all browsers in our hands, including Internet Explorer, Google Chrome, Firefox, Safari, Opera, Mobile Safari. On PHP, you get this DateTime format of the current time by

<?php
$objDateTime = new DateTime();
$strDateTime = $objDateTime->format("M d, Y H:i:s \G\M\TO");
?>
One observes that this is the Standard English Date Time expression.

1. Another Good Format "mmm dd yyyy hh:mm:ss GMT+0200"

For example, Jun 07 2025 01:38:19 GMT+0200 => Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
1Jun 07 2025 01:38:19 GMT+0200++++++

This format is also valid for all browsers in our hands, including IE, Google Chrome, Firefox, Safari, Opera, Safari Mobile. On PHP, you get this DateTime format of the current time by

<?php
$objDateTime = new DateTime();
$strDateTime = $objDateTime->format("M d Y H:i:s \G\M\TO");
?>
One notes that this is another English Date Time expression with timezone.

2. Good Format "mmm dd, yyyy hh:mm:ss GMT+2"

For example, Jun 07, 2025 01:38:19 GMT+2 => Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
2Jun 07, 2025 01:38:19 GMT+2++++++
As shown, you can shorten the timezone notification.

Bad Formats

All following date time strings are good for some browsers, but unfortunately bad for others.

3. Format "yyyy-mm-dd hh:mm:ss GMT+0200"

For example, 2025-06-07 01:38:19 GMT+0200 => Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
32025-06-07 01:38:19 GMT+0200-+--++

4. Format "yyyy-mm-dd hh:mm:ss GMT+02:00"

For example, 2025-06-07 01:38:19 GMT+02:00 => Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
42025-06-07 01:38:19 GMT+02:00-+--++

4. Format "yyyy-mm-dd hh:mm:ss GMT+0200"

For example, 2025-06-07 01:38:19 GMT+02:00 => Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
52025-06-07 01:38:19 GMT+200-+--++

6. Format "dd mmm yyyy hh:mm:ss+02:00"

For example, 07 Jun 2025 01:38:19+02:00 => Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
607 Jun 2025 01:38:19+02:00-+----

7. Format "mmm dd yyyy hh:mm:ss GMT+02:00"

For example, Jun 07 2025 01:38:19 GMT+2:00 => Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
7Jun 07 2025 01:38:19 GMT+2:00-++-++

8. Format "mmm dd, yyyy hh:mm:ss GMT+02:00"

For example, Jun 07, 2025 01:38:19 GMT+02:00 => Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
8Jun 07, 2025 01:38:19 GMT+02:00-++-++

9. Format "yyyy-mmm-dd hh:mm:ss GMT+2"

For example, 2025-06-07 01:38:19 GMT+2 => Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
92025-06-07 01:38:19 GMT+2-+--++

10. Format "yyyy-mmm-dd hh:mm:ss"

For example, 2025-06-07 01:38:19 => Sat Jun 07 2025 01:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
102025-06-07 01:38:19-+--++

11. Format "yyyy-mmm-ddThh:mm:ss+02:00"

For example, 2025-06-07T01:38:19+02:00 => Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
112025-06-07T01:38:19+02:00+++++-
You get this format by PHP5 DateTime=>format('c'). It's regrettable that JavaScript Mobile Safari does not support this format, as this is the universal date time string, used by SQL server, MySQL Server, ...

12. Format "yyyy-mmm-dd hh:mm:ss GMT+02:00"

For example, 2025-06-07 01:38:19+02:00 => Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
122025-06-07 01:38:19+02:00-+----

13. Format "mm-dd-yyyy hh:mm:ss GMT+0200"

For example, 06-07-2025 01:38:19 GMT+0200 => Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
1306-07-2025 01:38:19 GMT+0200++---+

14. Format "mm/dd, yyyy hh:mm:ss GMT+0200"

For example, 06/07, 2025 01:38:19 GMT+0200 => Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)

#js new Date() FeedIEChromeFirefoxSafariOperaMobile
1406/07, 2025 01:38:19 GMT+0200+++-++

JavaScript new Date() running results at one single glance under Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

Below, we summarize the date time feed checked above in a single table under your current browser.

#PHP DateTime->formatjs new Date() Feedjs new Date() outputs
0M d, Y H:i:s \G\M\TOJun 07, 2025 01:38:19 GMT+0200Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
1M d Y H:i:s \G\M\TOJun 07 2025 01:38:19 GMT+0200Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
2Jun 07, 2025 01:38:19 GMT+2Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
3Y-m-d H:i:s \G\M\TO2025-06-07 01:38:19 GMT+0200Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
4Y-m-d H:i:s \G\M\TP2025-06-07 01:38:19 GMT+02:00Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
52025-06-07 01:38:19 GMT+200Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
6d M Y H:i:s \G\M\TP07 Jun 2025 01:38:19+02:00Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
7Jun 07 2025 01:38:19 GMT+2:00Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
8M d Y H:i:s \G\M\TPJun 07, 2025 01:38:19 GMT+02:00Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
92025-06-07 01:38:19 GMT+2Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
10Y-m-d H:i:s2025-06-07 01:38:19Sat Jun 07 2025 01:38:19 GMT+0000 (Coordinated Universal Time)
11c2025-06-07T01:38:19+02:00Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
12Y-m-d H:i:sP2025-06-07 01:38:19+02:00Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
13m-d-Y H:i:s\G\M\TO06-07-2025 01:38:19 GMT+0200Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
14m/d, Y H:i:s\G\M\TO06/07, 2025 01:38:19 GMT+0200Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
15d-M-Y H:i:s \G\M\TO07-Jun-2025 01:38:19 GMT+0200Fri Jun 06 2025 23:38:19 GMT+0000 (Coordinated Universal Time)
Tab II: Real-Time JavaScript Date() Results with different Date time feed. See php.net: date — Format a local time/date.

Here the column "PHP DateTime->format" gives the format string to be used to obtain the "js new Date() Feed" column for JavaScript Date Constructor. The last column "js new Date() outputs" is JavaScript running results given by new Date(Date-Time String):

<script type="text/javascript">
document.write(new Date("Jun 07, 2025 01:38:19 GMT+0200"));
</script>

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