list-query.tec.4.4.7.minute-accuracy-queries.php

<?php
/**
 * Alter list view queries to be accurate to the minute (vs accurate to the second)
 * to give additional opportunities for persistent caching to kick in.
 */
add_action( 'tribe_events_pre_get_posts', function( $event_query ) {
	// Only modify event list queries
	if ( 'list' !== $event_query->get( 'eventDisplay') ) {
		return;
	}

	// Modify start date to always use 00 seconds
	$start_date = $event_query->get( 'start_date' );
	$start_date = preg_replace( '/^(\d{4}-\d{2}-\d{2} \d{2}:\d{2}:)(\d{2})$/', '${1}00', $start_date );
	$event_query->set( 'start_date', $start_date );
} );