With a modern literal meaning of "midnight," the term witching hour refers to the time of night (3:00-4:00 am is commonly speculated) when creatures such as witches, demons, and ghosts are thought to appear and to be at their most powerful and black magic to be most effective. It may be used to refer to any arbitrary time of bad luck or in which something bad has a greater likelihood to occur (e.g., a baby crying, or a computer crashing, or stock market volatility, crimes, supernatural, etc.). The witching hour from medieval times is the time believed that witches came out to do their "unholy" practices. The time ascribed to the witching hour was generally viewed after midnight. Women caught out late at night could have been suspected of witchcraft if they did not have a legitimate reason to be out.