Unfortunately, there is no successful method - without the assistance of a mechanical or electrical bodies. There are many supposed methods - banging one's head on the pillow, thinking about the time - even knowing the time to wake up - but these all rely on the principle of light sleep. If you are "dead" to the world or in deep sleep, then it won't make any difference. You will sleep through an alarm clock, an earthquake and even your mother shaking you.If you've had alcohol, then forget it.
The best way is to have enough sleep the night before to ensure you don't need a nap.
There are some alarm clocks on the market that will go off every hour if they are set correctly. There are also alarm apps for smartphones and tablets that can go off every hour or even less.
Most alarm clocks of 1963 were 12 hour alarm clocks - they did not know the difference between am & pm, so you would have at most 1 hour sleep. There may have been some electronic alarm clocks of 1963 which did know about am & pm, in which case they would permit at most 13 hours of sleep.
When the Sun rise up NO. The alarm would go off in an hour because wind up alarm clocks do not have AM and PM settings.
With some clocks only one hour but nowadays more and more clocks enable 24 hour settings for alarms so the answer would be 13 hours.
There are three ancient clocks they are:-1.Sundail2.Hour glass3.Pendelum
Clocks have 0, 2 or 3 hands: 0 (digital clocks), 2 (hour and minute), 3 (hour, minute and second).
Arizona does not observe Daylight Saving Time, so they did not turn their clocks back 1 hour.
Analog clocks have an hour hand and minute hand, and 12 numbers around a circle.
February 1st
The special feature of these clocks is that they will chime at preset intervals. Some chime on the hour, some on the half hour, and some can be set to chime every 15 minutes.
they turn the clocks back 1 hour. remember spring ahead and fall back?
Leave the key in the run position for one hour to get it to start