carbon sub 15 min laravel code example

Example 1: carbon two day ago

$dt  =Carbon::now();

echo $dt->subDay();                      // 2012-03-03 00:00:00
echo $dt->subDays(29);

Example 2: laravel carbon

$now = Carbon::now();
echo $now;                               // 2020-03-22 17:45:58
echo "\n";
$today = Carbon::today();
echo $today;                             // 2020-03-22 00:00:00
echo "\n";
$tomorrow = Carbon::tomorrow('Europe/London');
echo $tomorrow;                          // 2020-03-23 00:00:00
echo "\n";
$yesterday = Carbon::yesterday();
echo $yesterday;                         // 2020-03-21 00:00:00