Monday, April 4th, will be the fourth square root day this century.
Square Root Day is an unofficial holiday celebrated on days when both the day of the month and the month are the square root of the last two digits of the year. For example, the next Square Root Day is Monday, April 4, 2016 (4/4/16), the following Square Root Day will be May 5, 2025 (5/5/25). The final Square Root Day of the century will occur on September 9, 2081.
Square Root Day occurs on the following dates each century:
The Scientific American journal printed this article about the third Square Root Day of the century.
Happy Square Root Day 🙂