The effects begin approximately 15-30 minutes after insufflation and can last up to 2-3 hours.

Their evenings typically begin about 90 minutes before the scheduled start of an event and can last just as long afterward.

The Friday evening religious services begin 15 minutes after candlelighting.

Public tours begin approximately every 10 minutes, and no advanced reservations are required.

The same woman's voice said, "Conference will begin five minutes from now.

Coverage begins 20 minutes before game time with two segments.

Discussions of Mozart are to begin an hour and 15 minutes before each performance.

Symptoms usually begin 30 minutes to 2 hours after you eat or drink milk products.

Guided tours begin 15 minutes before and after the hour.

The officials' jurisdiction over games will begin 60 minutes before kickoff.