tidkilder
Tidkilder, literally “time sources” in Danish, is a term used to describe systems or signals that supply verified time information for synchronizing clocks and timekeeping infrastructure. In modern metrology and telecommunications, tidkilder are essential for ensuring consistent time across devices, networks, financial markets, navigation, and broadcasting.
Common tidkilder include atomic time scales such as TAI and UTC; astronomical time references; radio time signals;
Radio and satellite time signals provide widespread dissemination. Examples include longwave time signals from national laboratories
Organization and governance: the international time scale is maintained by organizations such as the BIPM, in