sajalarora

Square root day is a humorous holiday celebrated on dates where the day and the month are both the square root of the last two digits in the current year. For example, the last square root day was February 2, 2004 (2/2/04), and the next square root day will be March 3, 2009 (3/3/09). The final square root day of the century will occur on September 9, 2081.

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dusio

And? Any more info about it?

sajalarora

Nope, I only know this much.

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dusio

I see. Thanx anyway

sajalarora

Hey Dusio, I found something on net about the square root day.

Ron Gordon, a Redwood City, California high school teacher, created the first Square Root Day for September 9, 1981 (9/9/81). Gordon remains the holiday's publicist, sending news releases to world media outlets. Gordon's daughter set up a Facebook group where people can share how they were celebrating the day.

One suggested way of celebrating the holiday is by eating square radishes, or other root vegetables cut into shapes with square cross sections (thus creating a "square root")

Square Root Day occurs on the following dates each century:

1/1/01
2/2/04
3/3/09
4/4/16
5/5/25
6/6/36
7/7/49
8/8/64
9/9/81

The number of years between consecutive Square Root Days in a century are consecutive odd numbers: 3, 5, 7, 9, 11, 13, 15, 17. This illustrates the fact that every odd number is the difference of two consecutive squares.

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sajalarora

Because of the nature of perfect squares, the wait time between square root days increases by two years each time as the century unfolds—five years separated the previous square root day from today's, seven years will pass before the next square root day in 2016, and nine years will elapse before the following one in 2025. But after the final square root of this century, September 9, 2081 (9/9/81), there will be a slightly prolonged layover before the 22nd century starts its own run of square root days on January 1, 2101 (1/1/01).

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sajalarora

Because of the nature of perfect squares, the wait time between square root days increases by two years each time as the century unfolds—five years separated the previous square root day from today's, seven years will pass before the next square root day in 2016, and nine years will elapse before the following one in 2025. But after the final square root of this century, September 9, 2081 (9/9/81), there will be a slightly prolonged layover before the 22nd century starts its own run of square root days on January 1, 2101 (1/1/01).

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