Is it true that a snake wont die till the sun goes down?

There is some truth to this myth backed up by science explanation. A snake’s nervous system will still be functional for approximately 10 to 12 hours after they are pronounced dead. So probably that is where the myth or saying "a snake wont die til the sun goes down" came from. Because 10 to 12 hours is enough time from the morning for the sun to set down, and the nervous system will be completely dysfunctional and only will be then that the snake is truly dead. So the best way to ensure the snake does not bite you or attack you is to kill it, cut off its head and bury it so that its nervous system will be readily dysfunctional.