I'm sick, stop changing today, and watch 4 tomorrow! (within the time)
1 shift at 3 p.m., 1 watch at 5 p.m., 1 watch at 8 p.m., 1 watch at 11 p.m. (there may be a deviation of 1-15 minutes));
1 shift at 3 p.m., 1 watch at 5 p.m., 1 watch at 8 p.m., 1 watch at 11 p.m. (there may be a deviation of 1-15 minutes));