Witching hour

It alludes to Hamlet's line "Tis now the very witching time of night, When Churchyards yawne, and hell it selfe breakes out Contagion to this world.

[3] Nonetheless, there is psychological literature suggesting that apparitional experiences and sensed presences are most common between the hours of 2:00 am and 4:00 am, corresponding with a 3:00 am peak in the amount of melatonin in the body.

[8] As such, the immune system becomes very active and white blood cells fight infections in the body during sleep, and this would thereby worsen the symptoms of fever, nasal congestion, cough, chills and sweating.

[13] The term can also refer to a phenomenon where infants or young children cry for an extended period of time during the hour (or two) before their bedtime, becoming irritable and unwieldy with no known cause.

[15] Furthermore, violent crimes like rape and sexual assault would peak at midnight on average and DUI police incidents would usually tend to occur at around 2:00 am.