Christmas holidays sometimes consist of less than two weeks.

Each level consists of 10 weeks of instruction, totaling 200 classroom hours.

In their indigenous calendar, a week had four days, a month consisted of seven weeks and 13 months made a year.

This training consists of 20 weeks of physical and psychological endurance.

The first semester is followed by a break consisting of two to four weeks before the second semester.

For example, your treatment may consist of 12 weeks during which you have 15-minute stimulation sessions twice a day.

The college has two semesters in a session, each semester consists of 15 to 17 weeks.

Here is a possibility: Let each month consist of four weeks or 28 days, starting regularly on a Sunday.

Since there are two per year, the academic year consists of only 30 weeks.

The programs consist of one to four weeks of lectures, discussions, field trips and the like.