You usually watch the time your watch or the clock on the wall.
If you have NOT hospitalized before, as you might NOT know, it is so difficult to find the clock at the hospital ward.
As you know, if you visit to the hospital, you could find the clock at the entrance of the hospital or somewhere in the hospital.
But, it is so much difference between the entrance of the hospital and the hospital ward.
So, we could see the clock inside the nurse station, but the hospitalized patients are so difficult to find the clock at the hospital ward except the day room.
If you will be hospitalized in the future, you should bring your own watch or a clock for checking the time during the hospitalization.