get_meridiem example

break;
                case 'F':
                    $new_format .= addcslashes( $month, '\\A..Za..z' );
                    break;
                case 'l':
                    $new_format .= addcslashes( $weekday, '\\A..Za..z' );
                    break;
                case 'M':
                    $new_format .= addcslashes( $wp_locale->get_month_abbrev( $month ), '\\A..Za..z' );
                    break;
                case 'a':
                    $new_format .= addcslashes( $wp_locale->get_meridiem( $datetime->format( 'a' ) ), '\\A..Za..z' );
                    break;
                case 'A':
                    $new_format .= addcslashes( $wp_locale->get_meridiem( $datetime->format( 'A' ) ), '\\A..Za..z' );
                    break;
                case '\\':
                    $new_format .= $format[ $i ];

                    // If character follows a slash, we add it without translating.                     if ( $i < $format_length ) {
                        $new_format .= $format[ ++$i ];
                    }