If your interest is in waking at a certain time, you should use APIs like `clock_nanosleep(..., TIMER_ABSTIME)` (POSIX.1-2001) which let you say at what time yo

If your interest is in waking at a certain time, you should use APIs like `clock_nanosleep(..., TIMER_ABSTIME)` (POSIX.1-2001) which let you say at what time you would prefer to be awakened, instead of APIs which just say for how long you would like to sleep. (looks like the C++ spelling is std::this_thread::sleep_until)