134 Barnes & Noble NOOK Tablet User GuideConfiguring Time SettingsOn the Time settings page, you can control whether your NOOK uses a 12-hour clock or a 24-hour clock. You canalso select a Time Zone for your NOOK.To display the Time settings page, tap the Time button on the Settings screen. Your NOOK displays the Time settingspage, which looks like this:The Time settings page.By default, the list of time zones includes only time zones in the United States. To see a list of all time zones aroundthe world, tap the checkbox at the bottom of the screen. The checkbox is labeled Show all world time zones.