There are operating systems like macOS Ventura and Windows 11 that offer both light and dark modes, which can be useful for adjusting screen brightness based on the time of day. While some users prefer to manually switch between modes, others may find it convenient to have their computer automatically adjust its display settings to match the ambient lighting conditions. To achieve this on a Mac, one can access System Settings, choose Appearance and then Auto, selecting Light or Dark to enable automatic switching. On Windows, a third-party application called Auto Dark Mode can be used to automate the switch between dark and light modes based on custom schedules or location-based settings. Additionally, browser extensions like Dark Reader can help ensure that websites respect the user's chosen display mode.