Date Minus 1 Day

it posts today’s date but I want it to post yesterday’s date….

Do you want simply the day before the current day, or do you want the day previous to the post’s published date? They’re completely different. If you want the latter, you need to take the published date and subtract a day from it with php.

<h2><?php echo date('l, F j, Y', strtotime('-1 day')); ?></h2>