Registers and reference types
The period cannot be deduced from dates in microdata, but from the indicated period (shown under ‘Opdateringsfrekvens’ (update frequency)) – meaning that content in for example amounts, volumes, quantities etc. is aggregated over the indicated period (e.g. a quarter, a year).
https://www.dst.dk/en/TilSalg/data-til-forskning/generelt-om-data/registre-og-referencetyper