Red Moon, Blue Moon, Super Moon, Oy-still worth knowing First, a Blue Moon. Once in a Blue Moon ... is a common way of saying not very often, but what exactly is a Blue Moon? According to the popular definition, it is the second Full Moon to occur in a single calendar month. The average interval between Full Moons is about 29.5 days, while the length of an average month is roughly 30.5 days. This makes it very unlikely that any given month will contain two Full Moons. On average, there will be 41 months that have two Full Moons in every century, so you could say that once in a Blue Moon actually means once every two-and-a-half years. In March 1999, Sky and Telescope magazine published an article about Blue Moons by Philip Hiscock, who has studied the folklore and history of the expression. In that article, Hiscock traced the many meanings of the expression over the centuries, but noted that the "two Full moons in a single month" meaning couldn't be explained satisfactorily. In the May 1999 issue of Sky and Telescope, there appeared a follow-up article which proved that Sky and Telescope had in fact created the current meaning by mistake in an article published in March 1946. The author of the 1946 article had misinterpreted a page of the 1937 Maine Farmers' Almanac. By studying copies of the Maine Farmers' Almanac dating as far back as 1819, the authors of the May 1999 article showed that the compilers of the Almanac used the term to label the third Full Moon in a season which has four. Infoplease.com explains the origin as related to the Christian ecclesiastical calendar:
Some years have an extra full moon—thirteen instead of twelve. Since the identity of the moons was important in the ecclesiastical calendar (the Paschal Moon, for example, used to be crucial for determining the date of Easter), a year with a thirteenth moon skewed the calendar, since there were names for only twelve moons. By identifying the extra, thirteenth moon as a blue moon, the ecclesiastical calendar was able to stay on track. "Blue moon" appears to have been a colloquial expression long before it developed its calendrical senses. According to the Oxford English Dictionary, the first reference to a blue moon comes from a proverb recorded in 1528:If they say the moon is blue, We must believe that it is true.Saying the moon was blue was equivalent to saying the moon was made of green (or cream) cheese; it indicated an obvious absurdity. In the 19th century, the phrase until a blue moon developed, meaning "never." The phrase, once in a blue moon today has come to mean "every now and then" or "rarely"—whether it gained that meaning through association with the lunar event remains uncertain. http://www.infoplease.com/spot/bluemoon1.html Or, as Nanci Griffith would describe: ONCE IN A VERY BLUE MOON(Patrick Alger/Gene Levine)
I found your letter in my mailbox today You were just checkin' if I was okay And if I miss you, well, you know what they say ...
just once ... in a very blue moon just once in a very blue moon just once ... in a very blue moon and I feel one comin' on soon No need to tell me, you'd like to be friends and help me get back on my feet again If I miss you at all ... it's just now and then
just once ... in a very blue moon just once in a very blue moon just once ... in a very blue moon and I feel one comin' on soon There's a blue moon shinin' when I am reminded of all we've been through Such a blue moon ... shinin' Does it ever shine down on you? You act as if it never hurt you at all Like I'm the only one who's gettin' up from a fall Don't you remember? Can't you recall?
just once ... in a very blue moon just once in a very blue moon just once ... in a very blue moon and I feel one comin' on soon ... just once ... in a very ... blue moon Sung by Nanci Griffith (http://www.nancigriffith.com/lyrics.php?track=230) Second, A Lunar Eclipse.Much of the East Coast of the United States will only see a partial lunar eclipse of the blue moon just before and during dawn. The best time to look for it is at 6:48 am ET (sunrise is at 7:15 am). Worse is that just before dawn, the moon will be near the horizon in the western sky. If you live in a wooded area, in a city, or anywhere with an obstructed view of the horizon, it will be hard to spot.West Coasters will be able to see the full eclipse but will have to be up at 4:51 am PT to catch it. The Midwest has a shot too. In St. Louis, Missouri, people can check out the total eclipse just before sunrise, at 6:51 am CT. Alaska and Hawaii will have the best view in the United States. In Honolulu, the total eclipse begins at 2:51 am local time; in Anchorage, it begins at 3:51 am. Visit www.TimeandDate.com to see when you might be able to catch a glimpse of the eclipse in your area. During the eclipse, the moon will turn a coppery orange-red color because of light scattering and the refraction of that light by the Earth's atmosphere. Sometimes, you can also see a band of turquoise around the moon during the eclipse. The turquoise color is related to light passing through the upper stratosphere and through the ozone layer around the Earth. The ozone absorbs red light and leave behind the turquoise components. The best chances of seeing this are right at the beginning of totality, and at the end. Since most of the continental US will not be in the path of totality, Don't count on seeing much "red" in this eclipse. Last, a Supermoon. "Supermoon" has come to refer to a full moon at "perigee" in the moon's orbit. Perigee is when the moon is at it's closest point in its orbit to earth. At perigee, the moon tends to look brighter (up to 30% brighter!) and larger by 10 to 12 % than at other times. The moon is not really larger or brighter and is not coming to get us! "Supermoon" has come to be one of the most over-hyped terms used by reporters of astronomical events in an attempt to get people interested. Conclusion? On the morning of January 31, get a nice hot beverage and go outside just before dawn. You will see, if you have an unobstructed westward view, just above the horizon, a big bright full moon. It may look like a piece is being chewed off the corner and it may have a faint orangish tinge to it. It will be beautiful. |