Online PHP editor | output for Rm4Sp

<?php date_default_timezone_set('Europe/Moscow'); $beforDate=DateTime::createFromFormat('Y-m-d G:i:s', '1900-01-01 00:00:00'); // monday, 1-st Jan of 1900 $afterDate=DateTime::createFromFormat('Y-m-d G:i:s', '2021-02-08 00:00:42'); $dtInterval = $beforDate->diff($afterDate); $daysPassed = $dtInterval->days; echo "days passed if target date have 42 seconds from midnight: $daysPassed" . PHP_EOL; $afterDate=DateTime::createFromFormat('Y-m-d G:i:s', '2021-02-08 00:00:43'); $dtInterval = $beforDate->diff($afterDate); $daysPassed = $dtInterval->days; echo "days passed if target date have 43 seconds from midnight: $daysPassed" . PHP_EOL;