Redirect posts within a date range to new URL

functions.php

<?php
/**
 * Redirect posts within a date range to new URL with wp_redirect()
 * @url https://paulund.co.uk/get-posts-between-certain-dates-wordpress-rest-api
 */
add_action( 'template_redirect', function() {
	$args = array(
		'date_query' => array(
			array(
				'after' => 'November 1, 2020',
				'before' => array(
					'year' => 2021,
					'month' => 3,
					'day' => 19
				),
				'inclusive' => true
			)
		),
		'posts_per_page' => -1
	);
	
	$query = new WP_Query( $args );
	
	if ( $query->have_posts() ) : 
		while ( $query->have_posts() ) : $query->the_post();
			$slug = get_post_field( 'post_name', get_the_ID() );
			
      $url = 'https://example.com'; // Replace this to new URL
			
			if ( is_single( get_the_ID() ) ) :
				wp_redirect( $url . '/' . $slug, 301 );
			endif;
		endwhile;
	endif;
} );