What are the potential pitfalls of using JavaScript's new Date() function for time calculations?

One potential pitfall of using JavaScript's new Date() function for time calculations is that it relies on the user's local system time, which can vary and may not always be accurate. To solve this issue, you can use an API to fetch the current time from a reliable source, such as an NTP server, to ensure accuracy in your time calculations. 

// Fetch current time from an NTP server
$ntp_server = 'pool.ntp.org';
$timestamp = file_get_contents('http://' . $ntp_server);

// Convert timestamp to a PHP DateTime object
$datetime = new DateTime();
$datetime->setTimestamp($timestamp);

// Perform time calculations using the DateTime object
// For example, adding 1 hour to the current time
$datetime->modify('+1 hour');

// Output the result
echo $datetime->format('Y-m-d H:i:s');

Keywords

JavaScript Date() time calculations potential pitfalls accuracy

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