After a few weeks, increase your time to fifteen or twenty minutes, and increase the number of days.

VOA: special.2010.06.08

The committee noted that the number of days spent by passengers on ships in the area has increased by one hundred fifty percent in the last fifteen years.

VOA: special.2009.12.16

The number of World Cup artifacts coming into the library has increased in recent days, and Kale expects that trend to continue for the next few months.

VOA: standard.2010.07.10