TYPO3 Core

The 'now' attribute in the DataTime-Object of PHP Function depends on the internal clock.
Two Viewhelper may show the different time like in this example

$first = new DateTime('now');

sleep(2);
$second = new DateTime('now');
echo($first->format("Y-m-d H:i:s"));
echo("\n");
echo($second->format("Y-m-d H:i:s"));

If the date-parameter is an empty string, TYPO3 should use
$date = $GLOBALS['EXEC_TIME'] ?? time();
instead of
$date = 'now';.

If this is fixed, the documentation should changed, too.