Time keeping tattoos, such as clocks, hourglasses, and sundials, symbolize the preciousness and fleeting nature of time, often serving as a reminder to make the most of the present moment. These tattoos can also represent a personal milestone or significant event, such as the birth of a child or a major life transition. By permanently marking the body with a time-keeping symbol, individuals can acknowledge the passage of time and the importance of living in the present.