during

For all of a given time interval; throughout; in; pending.

I lived with my parents during the 1970s.

This shop, which was among the few able to stay open during the war, is closed during the whole of August.

During the whole time of his abode in the university he generally spent thirteen hours of the day in study; by which assiduity besides an exact dispatch of the whole course of philosophy, he read over in a manner all classic authors that are extant[…]

They stayed together during three dances, went out on to the terrace, explored wherever they were permitted to explore, paid two visits to the buffet, and enjoyed themselves much in the same way as if they had been school-children surreptitiously breaking loose from an assembly of grown-ups.

At any time or period within a given time interval or while a given event is ongoing.

I lived with my parents at several points during the 1980s.

Many of the best examples were produced during the Restoration.

We lost those files during the shift to the Cleveland office.

I told him about everything I could think of; and what I couldn't think of he did. He asked about six questions during my yarn, but every question had a point to it. At the end he bowed and thanked me once more. As a thanker he was main-truck high; I never see anybody so polite.

Aussi une forme de durepresent participle and gerund of dure