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(Space.com)   Tuesday night's full Moon will be a "Blue Moon", meaning the second full Moon in a calendar month, except it will be the first full Moon of August, so it really shouldn't be a "Blue Moon". But it is. Got that?   (space.com) divider line 24
    More: Misc, Sky & Telescope, full moons, Trivial Pursuit, midsummers  
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2582 clicks; posted to Geek » on 16 Aug 2013 at 4:33 PM (50 weeks ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



24 Comments   (+0 »)
   
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2013-08-16 04:21:47 PM
You saw me standing alone...
 
2013-08-16 04:31:04 PM
That actually makes WAY more farking sense than "2 blue moons a month."
 
2013-08-16 04:31:41 PM

reillan: That actually makes WAY more farking sense than "2 blue moons a month."


er.. 2 moons a month.  It's friday, leave me alone.  *curls up in the corner with his bottle of Jack, waiting for 4:30 to hit.*
 
2013-08-16 04:40:25 PM
Screw that quiz.  "No such thing" as the dark side of the moon?  That just ignores that that term refers to the far side of the moon, "dark" from earth-based sensor perspective.
 
2013-08-16 04:43:54 PM
So... how many new smurfs does this generate?
 
2013-08-16 05:01:31 PM

ikanreed: Screw that quiz.  "No such thing" as the dark side of the moon?  That just ignores that that term refers to the far side of the moon, "dark" from earth-based sensor perspective.


As  matter of fact, it's all dark.
 
2013-08-16 05:07:18 PM
it's just a coors marketing ploy to sell more beers
 
2013-08-16 05:31:27 PM
There's a good wikipedia entry on Blue Moons.  The incorrect "two full moons in a month" definition was started in the March 1946 issue of Sky and Telescope.  A blue moon has always meant the third full moon in a season with four full moons and the seasons always have precise start and end times at the equinoxes (when a line from the center of the sun to the center of the earth crosses the equator) and solstices (when that line hits the maximum latitude at the tropic of cancer/capricorn.)

One really cool but mostly forgotten phenomenon that relates to this is the Metonic Cycle which is due to the fact that 19 solar years is almost exactly the same time as 235 lunar months.  235 = (12 * 19) + 7 so there are always seven blue moons over a span of 19 years.
 
2013-08-16 05:53:53 PM
Ophaelin: A blue moon has always meant the third full moon in a season with four full moons and the seasons always have precise start and end times at the equinoxes (when a line from the center of the sun to the center of the earth crosses the equator) and solstices (when that line hits the maximum latitude at the tropic of cancer/capricorn.)

Even that definition has no basis in history.

This article explains that before the makers of Trivial Pursuit treated an the error originally printed in Sky & Telescope in the '40s as fact, the only definition of a blue moon was when the moon was actually blue.
 
2013-08-16 05:56:08 PM

Ophaelin: One really cool but mostly forgotten phenomenon that relates to this is the Metonic Cycle which is due to the fact that 19 solar years is almost exactly the same time as 235 lunar months. 235 = (12 * 19) + 7 so there are always seven blue moons over a span of 19 years.



well I guess SOMEONE has never heard of this thing called "Leap Year"
 
2013-08-16 06:25:04 PM

ThatGuyFromTheInternet: ikanreed: Screw that quiz.  "No such thing" as the dark side of the moon?  That just ignores that that term refers to the far side of the moon, "dark" from earth-based sensor perspective.

As  matter of fact, it's all dark.


Nuh uh, it's got eckeltricity, lights, and refrigerators for its cheese.
 
2013-08-16 06:53:17 PM
But what TFA does NOT mention is that the seasonal blue moon rule was actually a superseding rule of its own. It was based on a misunderstanding of the word translated from Moabite as "spring" for it was taken as the season, when really it referred to *A* spring, like water coming out of the ground and shiat. On the full moon that happens orthogonal to apogee (happens 19 times a century) the tribes would celebrate in the imim, as a token to the god Segem.

And this was all put down in clay seal implements some 2,000 years ago, but misunderstood by the translator Sir Conrad Blithgarten, and that was in the 1600s.
 
2013-08-16 07:02:53 PM
Well, there are three ways we measure time that are based on our local astronomy.  One "day" marks one complete rotation of the earth around its axis.  This is complicated by the fact that the earth is also revolving around the sun but the concept of noon is pretty clear, that's when the spot you are standing on is at its closest to the sun for the day.  One sidereal "year" marks one rotation of the earth around the sun.  Due to the earth's wobble (or precession) this is slightly different than a tropical or solar year but either is approximately 365.25 days.  A lunar "month" is the based on the sun, earth and moon being as colinear as possible (which is known as syzygy) and that's around 29.5 days.  BTW a week was originally just a division of a lunar month into four equal chunks...

Leap years are an attempt to deal with that extra day problem every four years and intercalary (aka blue) moons are an attempt to deal with those extra months that happen every 2-3 years.  This attempt to sync up systems of time is called Intercalation. Some people propose that "blue moon" really means "betrayer moon" (belewe is apparently an archaic word for betrayer) because it would trick folks into thinking some part of the Christian calendar (like lent and so on) had started or ended earlier than it was really supposed to happen.  Anyhow there is definitely a historical and physical basis for this even though our current calendar months no longer line up with the phases of the moon.
 
2013-08-16 07:05:54 PM
* Brought to you by MillerCoors *
 
2013-08-16 07:06:04 PM

albert71292: You saw me standing alone...


www.blessedisthekingdom.com
 
2013-08-16 07:27:45 PM
Nanci Griffith was so cute in my day.
 
2013-08-16 07:33:01 PM
But will it be huge? 14% bigger and 30% BRIGHTER! ZOMYGOD!!!
 
2013-08-16 07:36:53 PM

eltejon: Nanci Griffith was so cute in my day.


Just once..
 
2013-08-16 07:37:58 PM
I deal with at least one moron a day who insists that a month is exactly four weeks and that June 30-August 1 is a period of three months so this sort of pedantism is actually refreshing.
 
2013-08-16 07:43:00 PM
So, I've been wrong about blue moons ever since learning about them. I kinda like that. I hope this explanation sticks now that I've devoted some of my few, irreplaceable neurons to it.
 
2013-08-16 08:38:06 PM

Yes please: I deal with at least one moron a day who insists that a month is exactly four weeks


OK. Close, but no cigar.

and that June 30-August 1 is a period of three months

o_O
 
2013-08-16 09:06:28 PM

ArcadianRefugee: Yes please: I deal with at least one moron a day who insists that a month is exactly four weeks

OK. Close, but no cigar.

and that June 30-August 1 is a period of three months

o_O


June, July, August.  That's three.  What's so hard to understand about that?  Really, there's no point in arguing it, because they're always convinced they're right.  And typically their family is right there with them, nodding in the background, mumbling "Mmm hmmm, da's righ'."
 
2013-08-16 10:20:45 PM
A blue moon is just a moon visible during the day. Hence the "blue". Not sure when some asshole redefined it.
 
2013-08-17 06:33:13 AM

SevenizGud: But what TFA does NOT mention is that the seasonal blue moon rule was actually a superseding rule of its own. It was based on a misunderstanding of the word translated from Moabite as "spring" for it was taken as the season, when really it referred to *A* spring, like water coming out of the ground and shiat. On the full moon that happens orthogonal to apogee (happens 19 times a century) the tribes would celebrate in the imim, as a token to the god Segem.

And this was all put down in clay seal implements some 2,000 years ago, but misunderstood by the translator Sir Conrad Blithgarten, and that was in the 1600s.


So just like English, Moabite used the same word for a season and a source of water? How about a metal coil, was that the same word as well?

/do not know Moabite but that seems too much of a parallel to be accurate
 
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