gist.create

/*
 * EXAMPLE OF CHANGING ANY TEXT (STRING) IN THE EVENTS CALENDAR
 * See the codex to learn more about WP text domains:
 * http://codex.wordpress.org/Translating_WordPress#Localization_Technology
 * Example Tribe domains: 'tribe-events-calendar', 'tribe-events-calendar-pro'...
 */
function tribe_custom_theme_text ( $translations, $text, $domain ) {

	// Put your custom text here in a key => value pair
	// Example: 'Text you want to change' => 'This is what it will be changed to'
	// The text you want to change is the key, and it is case-sensitive
	// The text you want to change it to is the value
	// You can freely add or remove key => values, but make sure to separate them with a comma
	// This example changes the label "Venue" to "Location", and "Related Events" to "Similar Events"
	$custom_text = array(
		'Tickets' => 'Admit Card',
		'Related %s' => 'Similar %s',
	);

	// If this text domain starts with "tribe-", and we have replacement text
	if(strpos($domain, 'event-') === 0 && array_key_exists($text, $custom_text) ) {
		$text = $custom_text[$text];
	}

	return $text;
}
add_filter('gettext', 'tribe_custom_theme_text', 20, 3);