golden hour

/var/www/html/wp-content/plugins/the-events-calendar/src/Tribe

File/Folder	Size	Actions
API.php	27.83 KB
Adjacent_Events.php	9.13 KB
Admin	-
Admin_List.php	14.59 KB
Aggregator	-
Aggregator.php	16.7 KB
Ajax	-
Amalgamator.php	8.86 KB
Assets.php	19.96 KB
Backcompat.php	2.79 KB
Bar.php	3.28 KB
Capabilities.php	5.56 KB
Collections	-
Constants.php	1.64 KB
Cost_Utils.php	4.81 KB
Customizer	-
Dates	-
Deactivation.php	1.31 KB
Default_Values.php	793 B
Editor	-
Editor.php	16.92 KB
Embedded_Maps.php	5.37 KB
Event_Cleaner.php	2.59 KB
Event_Cleaner_Scheduler.php	5.95 KB
Event_Tickets	-
Featured_Events	-
Featured_Events.php	1.75 KB
Front_Page_View.php	9.87 KB
Google	-
Gutenberg.php	2.71 KB
I18n.php	10.51 KB
Ignored_Events.php	31.25 KB
Importer	-
Integrations	-
JSON_LD	-
Linked_Posts	-
Linked_Posts.php	43.79 KB
List_Widget.php	7.64 KB
Main.php	195.46 KB
Meta	-
Models	-
Options_Exception.php	890 B
Organizer.php	22.22 KB
Plugin_Register.php	675 B
Post_Exception.php	859 B
Privacy.php	1.31 KB
Query.php	54.4 KB
REST	-
Recurring_Event_Cleanup.php	2.13 KB
Repositories	-
Revisions	-
Rewrite.php	30.31 KB
Service_Providers	-
Shortcode	-
Template	-
Template_Factory.php	17.79 KB
Templates.php	24.04 KB
Timezones.php	6.37 KB
Updater.php	8.13 KB
Utils	-
Validator	-
Venue.php	22.95 KB
Views	-
iCal.php	26.37 KB

Edit: Recurring_Event_Cleanup.php

<?php

/**
 * Converts recurring events to single instances
 * and back when pro plugin is activated or
 * deactivated
 */
class Tribe__Events__Recurring_Event_Cleanup {
	private $recurring = false;

public function __construct() {
		$this->recurring = apply_filters( 'tribe_enable_recurring_event_queries', $this->recurring );
	}

/**
	 * Modify the database appropriately to reflect the current
	 * recurring events status
	 */
	public function toggle_recurring_events() {
		$current_status = tribe_get_option( 'recurring_events_are_hidden', false );
		if ( $current_status == 'hidden' && $this->recurring ) {
			$this->restore_hidden_events();
			tribe_update_option( 'recurring_events_are_hidden', 'exposed' );
		} elseif ( $current_status == 'exposed' && ! $this->recurring ) {
			$this->hide_recurring_events();
			tribe_update_option( 'recurring_events_are_hidden', 'hidden' );
		} elseif ( ! $current_status ) {
			tribe_update_option( 'recurring_events_are_hidden', ( $this->recurring ? 'exposed' : 'hidden' ) );
		}
	}

/**
	 * Convert hidden instances back to normal start dates
	 */
	private function restore_hidden_events() {
		global $wpdb;
		$wpdb->query( "UPDATE {$wpdb->postmeta} SET meta_key='_EventStartDate' WHERE meta_key='_HiddenEventStartDate'" );
	}

/**
	 * Convert all but the first instance of a recurring event
	 * to a hidden start date
	 *
	 * Reference for the subqueries: http://bugs.mysql.com/bug.php?id=21262
	 */
	private function hide_recurring_events() {
		global $wpdb;
		$sql = "SELECT meta_id FROM {$wpdb->postmeta} WHERE meta_key='_EventStartDate' AND post_id IN (
		  SELECT post_id from ( SELECT post_id FROM {$wpdb->postmeta} WHERE meta_key='_EventStartDate' GROUP BY post_id HAVING COUNT(meta_key) > 1 ) a
		) AND meta_id NOT IN (
		  SELECT meta_id FROM ( SELECT meta_id FROM {$wpdb->postmeta} WHERE meta_key='_EventStartDate' GROUP BY post_id HAVING MIN(CAST(meta_value AS DATETIME)) ) b
		)";
		$ids = $wpdb->get_col( $sql );
		if ( $ids ) {
			$sql = sprintf( "UPDATE {$wpdb->postmeta} SET meta_key='_HiddenEventStartDate' WHERE meta_id IN (%s)", implode( ',', array_map( 'intval', $ids ) ) );
		}
		$wpdb->query( $sql );
	}
}