Custom loop in WooCommerce that displays specific products between specific dates. Full Code https://wpsites.net/?p=115983

functions.php

function display_custom_products_before_category() {
    // Define the product IDs you want to display
    $custom_product_ids = array(123, 456, 789); // Replace with your product IDs

    // Set the date range to display the custom products (for 1 month)
    $start_date = '2024-05-01'; // Start date in 'Y-m-d' format
    $end_date = '2024-06-01';   // End date in 'Y-m-d' format
    $current_date = date('Y-m-d');

    // Check if current date is within the range
    if ($current_date >= $start_date && $current_date < $end_date) {
        $args = array(
            'post_type' => 'product',
            'post__in' => $custom_product_ids,
            'orderby' => 'post__in'
        );

        $custom_query = new WP_Query($args);

        if ($custom_query->have_posts()) {
            echo '<div class="custom-products">';
            while ($custom_query->have_posts()) {
                $custom_query->the_post();
                wc_get_template_part('content', 'product');
            }
            echo '</div>';
            wp_reset_postdata();
        }
    }
}
add_action('woocommerce_before_main_content', 'display_custom_products_before_category', 5);