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standardse aasta kestus, milleks loetakse 8760 h, time taken for one standard year to pass, taken as 8 760 h
aasta standardkestus . Valgustehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//valgus/aasta%20standardkestus/1/est (27.07.2026)
