Make a woocommerce coupon valid only in certain period of the day

code.php

<?php

/**
 * @param bool $is_valid
 * @param \WC_Coupon $coupon Coupon data.
 * @return bool
 */
add_filter( 'woocommerce_coupon_is_valid', function ( $is_valid, $coupon ) {
    if ( ! $is_valid ) return false;

    $coupon_code = 'XXXXXX';
    $start = 2300; // 23:00
    $end = 500; // 5:00
    
    if ( mb_strtolower( $coupon->get_code() ) === mb_strtolower( $coupon_code ) ) {
        $current_time = (int) \wp_date( 'Gi' );
        $is_valid = $current_time >= $start || $current_time <= $end;
    }

    return $is_valid;
}, 20, 2 );