Meaning a person of high rank or distinction is attested from c.1500 in English; as a longer way to say person, the word was in use from 1550s (but often slyly ironical, with suggestion that the subject is overly self-important).
If your system is standalone, the default sync interval for system time is 604800 seconds (7 days). If you are in a domain environment, the default sync interval is 3600 seconds (0.04166667 days). If you are using XP Pro, you can adjust your settings using Group Policy editor (GPedit - Administrative Templates\System\Windows Time Service\Time Providers) or you can adjust things through a registry edit (works for any version of XP).
According to figures collected by a screen lock app, the average user actually checks their phone around 110 times day. During peak times this equates to once every six or seven seconds, with some users unlocking their devices up to 900 times over the course of a day, which in reality is around 18 hours.