System Time

This theme covers the device's own system or hardware clock — a writable current-time value, an NTP clock-skew alert, and a full DateAndTime-format read of local time including timezone. Admins verify or manually set the system clock during initial setup or when a device's battery-backed clock reset after power loss, and treat an NTP clock-skew alert, a large sudden time adjustment, as a signal to investigate the clock source rather than just accepting the correction, since time-sensitive services like logging, TLS certificates, and NTP itself all depend on this clock being accurate and stable.