Having used the Metro Subterráneo system in Ciudad de México myself, I can say that knowing the exact service hours really helps avoid unnecessary waiting times. Typically, the metro runs daily from early in the morning until midnight, but on holidays, the service specifically runs from 7 am to 24 pm, providing ample time for both tourists and residents to travel comfortably. One thing to keep in mind is that service reliability and inspector presence ensure safety and punctuality, which I have personally appreciated during busy days. When planning trips during festive periods, checking the updated schedule helps a lot because some lines might adjust their timing or frequency. Moreover, understanding these schedules can aid you in combining metro travel with other transport options in Ciudad de México, like buses or taxis. Overall, familiarity with metro operating hours makes commuting easier and more efficient, especially in a bustling city where traffic can be unpredictable.