Events without plugin (wordpress)

Register and display events.

<?php
/**
 * Register events post type.
 */
add_action('init', function() {
  $labels = [
    'name' => _x('Events', 'post type general name'),
    'singular_name' => _x('Event', 'post type singular name'),
    'add_new' => _x('Add New', 'event'),
    'add_new_item' => __('Add New Event'),
    'edit_item' => __('Edit Event'),
    'new_item' => __('New Event'),
    'view_item' => __('View Event'),
    'search_items' => __('Search Events'),
    'not_found' => __('Nothing found'),
    'not_found_in_trash' => __('Nothing found in Trash'),
    'parent_item_colon' => '',
  ];
  $args = [
    'labels' => $labels,
    'public' => true,
    'publicly_queryable' => true,
    'show_ui' => true,
    'query_var' => true,
    'capability_type' => 'post',
    'hierarchical' => false,
    'menu_position' => null,
    'supports' => [
      'title',
      'editor',
      'thumbnail',
    ],
    'rewrite' => true,
    'show_in_nav_menus' => true,
    'show_in_rest' => true,
  ];
  register_post_type('events', $args);
});
?>

functions.php

Event template.

<?php
  $event_date = get_post_meta(get_the_ID(), 'event_date', true);
  if ($event_date) {
    echo esc_html(date('M d, Y', strtotime($event_date)));
  }
?>

event.php

Events template.

<?php
  $present = date('Ymd');

  $args = [
    'future' => [
      'label' => 'Future Events',
      'query_args'=>[
        'post_type' => 'events',
        'posts_per_page' => -1,
        'meta_key' => 'event_date',
        'orderby' => 'meta_value',
        'order' => 'ASC',
        'meta_query' => [
          [
            'key' => 'event_date',
            'value' => $present,
            'type' => 'numeric',
            'compare' => '>=',
          ],
        ],
      ],
    ],
    'past' => [
      'label' => 'Past Events',
      'query_args' => [
        'post_type' => 'events',
        'posts_per_page' => -1,
        'meta_key' => 'event_date',
        'orderby' => 'meta_value',
        'order' => 'DESC',
        'meta_query' => [
          [
            'key' => 'event_date',
            'value' => $present,
            'type' => 'numeric',
            'compare' => '<',
          ],
        ],
      ],
    ],
  ];

  foreach($args as $arg){
    $q = new WP_Query($arg['query_args']);
    printf('<h2>%s</h2>', esc_html($arg['label']));
    if ($q->have_posts()) {
      echo '<ul>';
      while ($q->have_posts()) {
        $q->the_post();
        printf(
          '<li><a href="%s">%s</a></li>',
          esc_url(get_permalink()),
          esc_html(get_the_title()),
        );
      }
      echo '</ul>';
    } else {
      echo '<p>There are no events at the moment.</p>';
    }
    wp_reset_postdata();
  }
?>

events.php

< toolbox