How can setting the server timezone affect the accuracy of time calculations in PHP?

Setting the server timezone in PHP is important for accurate time calculations because it ensures that date and time functions operate based on the correct timezone. If the server timezone is not set correctly, time calculations may be inaccurate, leading to incorrect results in date and time-related operations.

// Set the server timezone to the desired timezone (e.g., New York)
date_default_timezone_set('America/New_York');