Ticket #42373: 42373.diff

src/wp-includes/customize/class-wp-customize-date-time-control.php

@@ -142 +142 @@
                                         <div class="time-fields clear">
                                                 <label for="{{ idPrefix }}date-time-hour" class="screen-reader-text"><?php esc_html_e( 'Hour' ); ?></label>
                                                 <# var maxHour = data.twelveHourFormat ? 12 : 24; #>
-                                                <input id="{{ idPrefix }}date-time-hour" type="number" size="2" autocomplete="off" class="date-input hour" data-component="hour" min="1" max="{{ maxHour }}">
+                                                <input id="{{ idPrefix }}date-time-hour" type="number" size="2" autocomplete="off" class="date-input hour" data-component="hour" min="0" max="{{ maxHour-1 }}">
                                                 <span class="time-special-char date-time-separator">:</span>
                                                 <label for="{{ idPrefix }}date-time-minute" class="screen-reader-text"><?php esc_html_e( 'Minute' ); ?></label>
                                                 <input id="{{ idPrefix }}date-time-minute" type="number" size="2" autocomplete="off" class="date-input minute" data-component="minute" min="0" max="59">