The temple was rebuilt in the year 2004 and the festival is organized once in three years.

You can't read a book on time management and get organized once and for all.

A walking tour in the park is organized once a week.

Meetings are usually organized once a month and announced on the linux-delhi mailing-list.

The general conference was organized once a year: as a rule in November.

Besides the core activities of the college, evening lectures are organized once or twice every week.

The union, which had once organized nearly every tin and sheet metal plant in the country, now could count less than one-fifth under contract.

College sports are organized once every two years.

Although astronomy clubs run small star parties in some communities every month, the big ones are organized once a year, usually in the summer.

PI is being organized once a year, for international participants.