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Nothing. There are 5 Fridays, Saturdays and Sundays in October about once every seven years, not 823.
Nothing. There was a claim that 5 Fridays, 5 Saturdays and 5 Sundays in October happens only every 823 years, but this is not true. It happened in 1999, 2004, 2010 and the next occurrence will be in 2021.

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What happens only once every 823 years?

The claim is that every 823 years, there is a month with 5 Fridays, 5 Saturdays, and 5 Sundays. It happens in October 2010. But this is an internet hoax. October previously had 5 Fridays, 5 Saturdays and 5 Sundays in 1982, 1993, 1999 and 2004, and it will happen again in 2021. In fact, to my knowledge, there is NO calendar event [which is what this category pertains to] that regularly happens every 823 years. The Western world switched from the Julian to the Gregorian calendar more recently than that! (in 1582)


What happens every 823 years?

There is an internet hoax going around claiming that certain occurrences of five days in a month occur every 823 years. For examples, in October 2010, there were five Fridays, Saturdays, and Sundays. However, this occurrence occurs at the most every 11 years. The next time five Fridays, Saturdays, and Sundays occurs in a month is March 2013. The next time it occurs in October is October 2021.


How often does october have 5 Fridays 5 Saturdays and 5 Sundays?

A false rumor is floating around the Internet that this happens only once every 823 years. The reality is that it happens whenever the first day of October is on Friday, which happens on average once every seven years. The last time for this "rare" event was 6 years ago, back in 2004. And the time before that was 5 years previously, in 1999.


How often are there 5 Fridays 5 Saturdays and 5 Sundays in a month?

every 823 years.


This year July has 5 Fridays 5 saturdays and 5 Sundays once in every 823 years?

More like every 28 years, I think.


Why are there only 5 fridays saturdays Sundays in October every 823 years-seems like to me if there's always 31 days in October then- if Oct 1st is a Friday then the 5 weekend days would occur?

Actually - the NEXT occurrence will be in 2021 - which is only eleven years away, and 2032 ! The days & dates in the calendar repeat every 11 years. Have a look in your Windows calendar !


What years did October 1 fall on Friday?

October 1 falls on a Friday in a leap year that starts on a Thursday. This occurs every 28 years in the Gregorian calendar. The most recent years when October 1 fell on a Friday were 2010 and 2021. The next occurrence will be in 2042.


How often 5 Friday's 5 Saturday's and 5 Sunday's in one month in Chinese Calendar?

Once every 823 years


What are the factors and prime factors of 823?

The number 823 is a prime number because its only factors are 1 and itself.The two factors of 823 are 1 and 823.The only factor pair of 823 is 1 x 823.The only prime factor of 823 is 823.The distinct prime factor of 823 is 823.


How old is Ermentrude of Orléans?

Ermentrude of Orléans was born on September 27, 823 and died on October 6, 869. Ermentrude of Orléans would have been 46 years old at the time of death or 1191 years old today.


How old is Charles the Bald?

Charles the Bald was born on June 13, 823 and died on October 6, 877. Charles the Bald would have been 54 years old at the time of death or 1192 years old today.


What is special about August 2010?

This August has 5 Sundays, 5 Mondays and 5 Tuesdays, all in one monthIt happens once in 823 years. Weird or What!And you are experiencing it in your life time