\WP_Stager_Integration\Calendar::format_event_time_label(int $start_timestamp, int $end_timestamp, array $args = array()): string

Full Code

/**
 * Formats event start and end times into a text label (e.g. "9:00 am - 8:00 pm").
 *
 * @param int   $start_timestamp  The start timestamp of the event
 * @param int   $end_timestamp    The end timestamp of the event
 * @param array $args             (Optional) Additional arguments passed to the component template.
 *
 * @return string   A formatted event time label
 */
public static function format_event_time_label( $start_timestamp, $end_timestamp, $args = array() ) {

    // Type casting
    $start_timestamp = (int) $start_timestamp;
    $end_timestamp   = (int) $end_timestamp;
    $args            = (array) $args;

    // Get time format
    $time_format = (string) (get_option( 'time_format' ) ?: 'H:i');

    // Define default label
    $default = (string) wp_date( $time_format, $start_timestamp );

    /**
     * Filters the default calendar "event time" label text.
     *
     * @param string    $label            The label text
     * @param int       $start_timestamp  The start timestamp of the event
     * @param int       $end_timestamp    The end timestamp of the event
     * @param array     $args             Additional arguments passed to the component template.
     *
     * @return string   Must return a string
     */
    $label = (string) apply_filters( 'wpstagerintegration_calendar_label_event_time', $default, $start_timestamp, $end_timestamp, $args );

    return $label;
}