In a standard professional soccer match, there are two halves, each lasting 45 minutes, with a 15-minute halftime. Different leagues may vary in their timings. Youth leagues typically feature shorter durations, such as high school matches with two 40-minute halves or four 20-minute quarters. Meanwhile, youth soccer games often consist of two 20-minute halves or four 10-minute quarters.
The referee has the authority to compensate for lost time caused by substitutions, injuries, or intentional time-wasting by a team. This rule was introduced to counteract instances where players would deliberately delay the game, feign injuries, or take excessive time with substitutions, especially when in the lead. Consequently, the referee can now add this lost time to the end of the period.