 In 1992, during Aníbal Cavaco Silva government, by Decree-Law 124/92, mainland Portugal officially changed its time zone from WET () to CET ().Differently from the 1966 move to CET, this time DST was to be observed, as CEST (), from the last Sunday in March to the last Sunday in September.The measure, approved without the consultation of Lisbon Observatory, had the intention of promoting energy savings, in order that “Portugal follow, in work schedules, the countries with which it maintains more frequent contacts” (DL 124/92) and so promoting economic growth.