Seth Stephens-Davidwitz did an admittedly unscientific study of topics search on Google during different times of the day.
Here are a few of his findings:
8:04 am to about 1:30 pm: Unblocked Games
5:30 am: Is the peak time for searches for weather, prayer and news
12:30 am: Is a peak time for suicide information.
2:00 am to 4:00 am: This is the time for big questions, i.e. What is the meaning of consciousness? Does free will exist? Is there life on other planets? (Mr. Stephens-Davidwitz opines "The popularity of these questions late at night may be a result, in part, of cannabis use (See Below)
1:00 am to 2:00 am: Are peak times for the search question: How to roll a joint.
Late night is also the highest rate for "symptoms" (i.e. heart attacks, colon cancer, H.I.V., A.L.S., strokes, brain tumors, etc.).
12:00 am to 2:00 am: Porn for men, for women 'Literotica' is searched between 3:00 am to 5:00 am. Vibrators are big around 4:00 am and 'how to put on a condom' about 10:30 pm.
'Why is my poop green'? Seems have two peak times. The first one between 5:00 am and 6:00 am with the second peak occurring between 6:00 pm and 7:00 pm.
Seth Stephens-Davidwitz, Days of Our Digital Lives, New York Times, Sunday Review, Page 4, July 5, 2015,