Meanings of open evenings in English

With these ill-gotten gains I visited the gold exchange, then open evenings.

I'll take you to a place that keeps open evenings.

It has regular open evenings featuring planetarium presentations.

The only remedy appears to be, where libraries are open evenings, to furnish them with electric lights.

Each week I attend two professional development seminars each week, plus school productions, open evenings and parents' evenings.

The boys prefer to have occasional open evenings when they are free to loaf around, and go to bed early.

The Board of Education, at its next meeting, authorized the superintendent of schools to throw the High School gym., open evenings for the purpose indicated.

His are the opened evenings after a day shut down with cloud.