It is 3:14, not 3:15.
It is Pi.
It IS 3:14 or 3.14…Pi.
https://fivethirtyeight.com/features/even-after-22-trillion-digits-were-still-no-closer-to-the-end-of-pi/
http://www-groups.dcs.st-and.ac.uk/history/HistTopics/Pi_through_the_ages.html
It IS 3:14 or 3.14…Pi.
https://fivethirtyeight.com/features/even-after-22-trillion-digits-were-still-no-closer-to-the-end-of-pi/
http://www-groups.dcs.st-and.ac.uk/history/HistTopics/Pi_through_the_ages.html