"Час" is the Russian word for "time." It refers to the ongoing progression of events and is a fundamental concept in both daily life and scientific study. Time can be measured in various units, such as seconds, minutes, hours, and days, and is essential for organizing activities and understanding the sequence of events. In everyday use, "час" often denotes a specific hour of the day. For example, people might say "в три часа" to mean "at three o'clock." Understanding "час" is crucial for scheduling, planning, and coordinating with others, making it a vital aspect of communication and social interaction.