Source

File: wp-includes/general-template.php

function get_the_time( $format = '', $post = null ) {
	$post = get_post( $post );

	if ( ! $post ) {
		return false;
	}

	$_format = ! empty( $format ) ? $format : get_option( 'time_format' );

	$the_time = get_post_time( $_format, false, $post, true );

	/**
	 * Filters the time a post was written.
	 *
	 * @since 1.5.0
	 *
	 * @param string      $the_time The formatted time.
	 * @param string      $format   Format to use for retrieving the time the post was written.
	 *                              Accepts 'G', 'U', or PHP date format value specified
	 *                              in 'time_format' option. Default empty.
	 * @param int|WP_Post $post     WP_Post object or ID.
	 */
	return apply_filters( 'get_the_time', $the_time, $format, $post );
}