posted May 12, 2015 01:00 AM            

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Originally posted by Catalina:
Cool thanks Lexx

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posted May 12, 2015 01:00 AM            

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Originally posted by mirage29:
What do you think that means, Lexxigramer?

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posted May 13, 2015 06:35 AM            

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Originally posted by Valentine:
That's interesting. thanks,

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posted May 13, 2015 06:57 AM            

by Tanya Lewis, Staff Writer | May 12, 2015 01:44pm ET

Madam, I'm Adam.
A man, a plan, a canal: Panama. Palindromes are everywhere — including on the calendar.

Every day this week — in fact, every day between May 10 and May 19, as written in five- or six-digit month/day/year format — is a palindrome. This means the numbers read the same forward as backward (5/10/15 – 5/19/15). And Mother's Day was a seven-digit palindrome (5/10/2015), only the eighth such date that has occurred so far this century.

Strings of five-digit palindrome dates aren't actually that rare, according to Aziz Inan, an electrical engineering professor at the University of Portland, who calculates these dates as a hobby. "Whereas five-digit dates occur every year, the next time Mother's Day will be a palindrome date will be 790 years" from now, Inan told Live Science. [The 9 Most Massive Numbers in Existence]

The next such palindrome week will occur in June 2016 (6/10/16-6/19/16), and this pattern of five-digit palindromes will continue until 2020. After that, another type of five-digit palindrome will take its place, with two-digit months and one-digit days (for example, 02/1/20), Inan explained.

Seven- or eight-digit palindrome dates are much more rare — only 38 such dates occur in the 21st century, Inan said. Twenty-six of these dates are seven digits, and 12 are eight digits. As of Sunday (May 10), eight of these dates have already occurred this century, leaving 30 remaining.

"Eight-digit palindrome dates are very rare, and are clustered in the first three or so centuries at the beginning of a [millennium], and then don't show up for 600 to 700 years, until they appear as a cluster in the next millennium," Inan told Live Science in November 2011, the last time such a date occurred (11/02/2011).

The reason for the rarity of these dates is that the day number can only reach 31. For example, the palindrome of a year such as 1401 would give you 1041, which exceeds the number of days in a month (since there is no Oct. 41). So, eight-digit palindrome dates will become rare again after the year 2300 (as there are no 32nd days of the month).

An eight-digit palindrome date that falls on Mother's Day is even more rare, because they have to occur on the second Sunday of May, Inan said.