<div class="mr-2">
<?php
if( $categories = get_the_category() ){
foreach( $categories as $cat ){
echo '<span class="mr-2 post-category">'. esc_html( $cat->name ) .'</span>';
}
}
?>
<span class="text-muted">
<?php the_time( get_option( 'date_format' ) ); ?>
</span>
</div>