gmdate(format,timestamp)

<?php
   date = gmdate("D M d Y");
   print("Date: ".date);
?>

Date: Fri May 08 2020

<?php
   date = gmdate("H:i:s");sun_info = date_sun_info(date, 20.5937, 78.9629);
   print_r(sun_info);
?>

Array
(
    [sunrise] => 4818
    [sunset] => 44087
    [transit] => 24453
    [civil_twilight_begin] => 3381
    [civil_twilight_end] => 45524
    [nautical_twilight_begin] => 1729
    [nautical_twilight_end] => 47176
    [astronomical_twilight_begin] => 98
    [astronomical_twilight_end] => 48807
)

<?php
   ts = 1022555568;date = gmdate("D M d Y", ts);
   print(date);
?>

Tue May 28 2002

<?php
   date_default_timezone_set('UTC');   
   echo gmdate("l");
   echo "\n";   
   echo gmdate('l dS \of F Y h:i:s A');
   echo "\n";
?>

Wednesday
Wednesday 13th of May 2020 05:57:30 PM