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("May 16, 2025 06:17:58 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() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 0 | May 16, 2025 06:17:58 GMT+0200 | + | + | + | + | + | + |
| 1 | May 16 2025 06:17:58 GMT+0200 | + | + | + | + | + | + |
| 2 | May 16, 2025 06:17:58 GMT+2 | + | + | + | + | + | + |
| 3 | 2025-05-16 06:17:58 GMT+0200 | - | + | - | - | + | + |
| 4 | 2025-05-16 06:17:58 GMT+02:00 | - | + | - | - | + | + |
| 5 | 2025-05-16 06:17:58 GMT+200 | - | + | - | - | + | + |
| 6 | 16 May 2025 06:17:58+02:00 | - | + | - | - | - | - |
| 7 | May 16 2025 06:17:58 GMT+2:00 | - | + | + | - | + | + |
| 8 | May 16, 2025 06:17:58 GMT+02:00 | - | + | + | - | + | + |
| 9 | 2025-05-16 06:17:58 GMT+2 | - | + | - | - | + | + |
| 10 | 2025-05-16 06:17:58 | - | + | - | - | + | + |
| 11 | 2025-05-16T06:17:58+02:00 | + | + | + | + | + | - |
| 12 | 2025-05-16 06:17:58+02:00 | - | + | - | - | - | - |
| 13 | 05-16-2025 06:17:58 GMT+0200 | + | + | - | - | - | + |
| 14 | 05/16, 2025 06:17:58 GMT+0200 | + | + | + | - | + | + |
| 15 | 16-May-2025 06:17:58 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 "2025-05-16 06:17:58" 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, May 16, 2025 06:17:58 GMT+0200 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 0 | May 16, 2025 06:17:58 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, May 16 2025 06:17:58 GMT+0200 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 1 | May 16 2025 06:17:58 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, May 16, 2025 06:17:58 GMT+2 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 2 | May 16, 2025 06:17:58 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, 2025-05-16 06:17:58 GMT+0200 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 3 | 2025-05-16 06:17:58 GMT+0200 | - | + | - | - | + | + |
4. Format "yyyy-mm-dd hh:mm:ss GMT+02:00"
For example, 2025-05-16 06:17:58 GMT+02:00 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 4 | 2025-05-16 06:17:58 GMT+02:00 | - | + | - | - | + | + |
4. Format "yyyy-mm-dd hh:mm:ss GMT+0200"
For example, 2025-05-16 06:17:58 GMT+02:00 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 5 | 2025-05-16 06:17:58 GMT+200 | - | + | - | - | + | + |
6. Format "dd mmm yyyy hh:mm:ss+02:00"
For example, 16 May 2025 06:17:58+02:00 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 6 | 16 May 2025 06:17:58+02:00 | - | + | - | - | - | - |
7. Format "mmm dd yyyy hh:mm:ss GMT+02:00"
For example, May 16 2025 06:17:58 GMT+2:00 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 7 | May 16 2025 06:17:58 GMT+2:00 | - | + | + | - | + | + |
8. Format "mmm dd, yyyy hh:mm:ss GMT+02:00"
For example, May 16, 2025 06:17:58 GMT+02:00 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 8 | May 16, 2025 06:17:58 GMT+02:00 | - | + | + | - | + | + |
9. Format "yyyy-mmm-dd hh:mm:ss GMT+2"
For example, 2025-05-16 06:17:58 GMT+2 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 9 | 2025-05-16 06:17:58 GMT+2 | - | + | - | - | + | + |
10. Format "yyyy-mmm-dd hh:mm:ss"
For example, 2025-05-16 06:17:58 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 10 | 2025-05-16 06:17:58 | - | + | - | - | + | + |
11. Format "yyyy-mmm-ddThh:mm:ss+02:00"
For example, 2025-05-16T06:17:58+02:00 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 11 | 2025-05-16T06:17:58+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, 2025-05-16 06:17:58+02:00 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 12 | 2025-05-16 06:17:58+02:00 | - | + | - | - | - | - |
13. Format "mm-dd-yyyy hh:mm:ss GMT+0200"
For example, 05-16-2025 06:17:58 GMT+0200 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 13 | 05-16-2025 06:17:58 GMT+0200 | + | + | - | - | - | + |
14. Format "mm/dd, yyyy hh:mm:ss GMT+0200"
For example, 05/16, 2025 06:17:58 GMT+0200 =>
| # | js new Date() Feed | IE | Chrome | Firefox | Safari | Opera | Mobile |
|---|
| 14 | 05/16, 2025 06:17:58 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->format | js new Date() Feed | js new Date() outputs |
|---|
| 0 | M d, Y H:i:s \G\M\TO | May 16, 2025 06:17:58 GMT+0200 |
|
| 1 | M d Y H:i:s \G\M\TO | May 16 2025 06:17:58 GMT+0200 |
|
| 2 | | May 16, 2025 06:17:58 GMT+2 |
|
| 3 | Y-m-d H:i:s \G\M\TO | 2025-05-16 06:17:58 GMT+0200 |
|
| 4 | Y-m-d H:i:s \G\M\TP | 2025-05-16 06:17:58 GMT+02:00 |
|
| 5 | | 2025-05-16 06:17:58 GMT+200 |
|
| 6 | d M Y H:i:s \G\M\TP | 16 May 2025 06:17:58+02:00 |
|
| 7 | | May 16 2025 06:17:58 GMT+2:00 |
|
| 8 | M d Y H:i:s \G\M\TP | May 16, 2025 06:17:58 GMT+02:00 |
|
| 9 | | 2025-05-16 06:17:58 GMT+2 |
|
| 10 | Y-m-d H:i:s | 2025-05-16 06:17:58 |
|
| 11 | c | 2025-05-16T06:17:58+02:00 |
|
| 12 | Y-m-d H:i:sP | 2025-05-16 06:17:58+02:00 |
|
| 13 | m-d-Y H:i:s\G\M\TO | 05-16-2025 06:17:58 GMT+0200 |
|
| 14 | m/d, Y H:i:s\G\M\TO | 05/16, 2025 06:17:58 GMT+0200 |
|
| 15 | d-M-Y H:i:s \G\M\TO | 16-May-2025 06:17:58 GMT+0200 |
|
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("May 16, 2025 06:17:58 GMT+0200"));
</script>
