Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search
16 replies = new reply since forum marked as read
Highlight: NoneDon't highlight anything 5 newestHighlight 5 most recent replies
Trivia stuff (Original Post) sarge43 Aug 2015 OP
seems like it would be every 7 years Enrique Aug 2015 #1
Run a check for 2008, 2001 and 1994 for a threefer sarge43 Aug 2015 #2
But this year will NEVER top 1192 pinboy3niner Aug 2015 #3
You're comparing apples and oranges Brother Buzz Aug 2015 #5
It happened in 2010. kellytore Aug 2015 #4
August 2010 sarge43 Aug 2015 #6
2009 kellytore Aug 2015 #7
In August? n/t sarge43 Aug 2015 #8
yup! lastlib Aug 2015 #9
Thank you. I sit corrected. sarge43 Aug 2015 #10
If you picked an August 1 that falls on a Saturday, then Aug. 29, 30 and 31 will also have Cal33 Aug 2015 #14
OK, i'll eat my words--it may happen every 823 years....... lastlib Aug 2015 #11
You're on the right track discntnt_irny_srcsm Aug 2015 #15
well maybe on your planet olddots Aug 2015 #12
I hope it adds an extra pay day :) mackerel Aug 2015 #13
Thanks!. I'll mark it in my 2838 calendar. rug Aug 2015 #16

sarge43

(28,941 posts)
2. Run a check for 2008, 2001 and 1994 for a threefer
Sun Aug 16, 2015, 02:23 PM
Aug 2015

2001: Sun, Sat

2001: Mon

1994: None

Would appear the combo is rare

Brother Buzz

(36,434 posts)
5. You're comparing apples and oranges
Sun Aug 16, 2015, 03:07 PM
Aug 2015

In 1192 they were still using the Julian calendar, not the less flawed Gregorian calendar.

sarge43

(28,941 posts)
6. August 2010
Sun Aug 16, 2015, 03:51 PM
Aug 2015

The 1st was on a Sunday which allows for 5 Sundays and 5 Mondays, but only 4 Saturdays.

lastlib

(23,233 posts)
9. yup!
Sun Aug 16, 2015, 06:28 PM
Aug 2015

looks like it'll happen again in 2020, 2026, 2037, 2043, and 2048. There are more instances, but i won't bother to list 'em.

I think the 823 years bit is just out of someone's arse.

 

Cal33

(7,018 posts)
14. If you picked an August 1 that falls on a Saturday, then Aug. 29, 30 and 31 will also have
Sun Aug 16, 2015, 07:10 PM
Aug 2015

to be Saturday, Sunday and Monday. Q.E.D. No big problem.

lastlib

(23,233 posts)
11. OK, i'll eat my words--it may happen every 823 years.......
Sun Aug 16, 2015, 06:39 PM
Aug 2015

but it appears that it also happens every 28 years, every, 56 years, and every 84 years. There is a cycle to it, but I haven't yeat worked out the mathematics of it.

In fact, every month that has 31 days has five of three consecutive days in it. Nature of the beast.

discntnt_irny_srcsm

(18,479 posts)
15. You're on the right track
Sun Aug 16, 2015, 07:11 PM
Aug 2015

All 31 day months must have 5 instances of 3 of the 7 days of the week. The next occurrence of the Saturday, Sunday and Monday trio x 5 will be October of 2016. The number of years between when this will occur next in August would be 7 but every 7 year stretch has at least one leap year in it. That means we only have to wait 5 years until the next occurrence in August because the next 7 years have 2 leap years. The following 7 years has only 1 leap year so the after 2020 the next occurrence in August should be in 2026. And so no....

Latest Discussions»The DU Lounge»Trivia stuff