October, 2010
“This October has 5 Fridays, 5 Saturdays and 5 Sundays all in one month. It happens only once in 823 years.”
Hey, wait a minute. Despite garnering a million google hits, and being the subject of at least two Facebook groups, can this possibly be true? Of course not. There are only seven possible days of the week on which any particular year can begin, and since every year has either 365 or 366 days, that gives us only 14 possible calendars.
Can you say "perpetual calendar," children? In fact, the calendar for 2010 is the same as that for 1999, 1993, and 1982. And we'll be using it again in 2021 and 2027.
Looked at another way, EVERY month with 31 days consists of 4 nice, orderly repetitions of 7-day weeks, with three days left over. Thus, EVERY 31-day month will provide us with 4 instances of each of 4 days of the week, and 5 instances of the remaining three days of the week.
And, just so you know, my birthday in 3867 is a Thursday.
Hey, wait a minute. Despite garnering a million google hits, and being the subject of at least two Facebook groups, can this possibly be true? Of course not. There are only seven possible days of the week on which any particular year can begin, and since every year has either 365 or 366 days, that gives us only 14 possible calendars.
Can you say "perpetual calendar," children? In fact, the calendar for 2010 is the same as that for 1999, 1993, and 1982. And we'll be using it again in 2021 and 2027.
Looked at another way, EVERY month with 31 days consists of 4 nice, orderly repetitions of 7-day weeks, with three days left over. Thus, EVERY 31-day month will provide us with 4 instances of each of 4 days of the week, and 5 instances of the remaining three days of the week.
And, just so you know, my birthday in 3867 is a Thursday.
Labels: Clowns, News You Can't Use
Presented for your delectation by the Gentleman Farmer at 12:31 PM
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