tidsjusteringer

Tidsjusteringer refers to adjustments made to clocks and timekeeping systems to maintain civil time in agreement with standardized time, time zones, and time references from astronomy or networks. They cover events and procedures that move, reset, or continually correct the time displayed by devices and systems.

Common forms include daylight saving time (DST) adjustments, where clocks are moved forward or backward by one hour; changes in official time zones enacted by government; occasional leap seconds inserted into Coordinated Universal Time (UTC) to compensate for irregularities in Earth's rotation; and ongoing clock synchronization using time protocols such as NTP or PTP, as well as time signals from GNSS networks (GPS, GLONASS, Galileo).

Rationale and impact: Tidsjusteringer aim to keep civil time aligned with day-night cycles and with international time standards, ensuring coordination in transportation, finance, communication, and computing. They can improve energy use and scheduling, but may create disruption during transitions, cause software and scheduling challenges around leap seconds or DST changes, and raise debates about the usefulness of DST.

Implementation and standards: Most devices and servers perform automatic time synchronization with external time servers; administrators configure time zones and DST rules in operating systems and networks. Standards and references include ISO 8601 for date and time representation and various national or international regulations governing time distribution and leap seconds. Modern infrastructures increasingly rely on GNSS time, NTP, and PTP to maintain precise, traceable time across distributed systems.