Once in 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, whilst 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, though it does sometimes happen.

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.
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A blue moon is a full moon that is not timed to the regular monthly pattern. Most years have twelve full moons which occur approximately monthly, but in addition to those twelve full lunar cycles, each solar calendar year contains an excess of roughly eleven days compared to the lunar year. The extra days accumulate, so that every two or three years (on average about every 2.7154 years), there is an extra full moon. The extra moon is called a "blue moon." Different definitions place the "extra" moon at different times.

* In calculating the dates for Lent and Easter, the Clergy identify the Lent Moon. It is thought that historically when the moon's timing was too early, they named an earlier moon as a "betrayer moon" (belewe moon), thus the Lent moon came at its expected time.
* Folklore gave each moon a name according to its time of year. A moon which came too early had no folk name – and was called a blue moon – bringing the correct seasonal timings for future moons.
* The Farmers' Almanac defined blue moon as an extra full moon that occurred in a season; one season was normally three full moons. If a season had four full moons, then the third full moon was named a blue moon.
* Recent popular usage defined a blue moon as the second full moon in a calendar month, stemming from an interpretation error made in 1946 that was discovered in 1999.

The term "blue moon" is commonly used metaphorically to describe the rarity of an event, as in the idiomatic expression, "once in a blue moon."
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Early English and Christian usage

The earliest recorded English usage of the term "blue moon" was in a 1528 pamphlet violently attacking the English clergy, entitled "Rede Me and Be Not Wrothe" (Read me and be not angry): "Yf they say the mone is belewe / We must believe that it is true" [If they say the moon is blue, we must believe that it is true].

Some interpret this "blue moon" as relating to absurdities and impossibilities,and a similar moon-related adage was first recorded in the following year: "They would make men beleue ... that þe Moone is made of grene chese" [They would make men believe ... that the moon is made of green cheese].

An alternative interpretation uses the other Old English meaning of belewe (which can mean "blue" or "betrayer") The church was responsible for the calendar and used the complex computus to calculate the important date of Easter, which is based on the full moon. Lent falls before Easter, starting at the beginning of the Lent moon cycle (late winter moon). The next moon is the egg moon (early spring moon), and Easter usually falls on the first Sunday after the full egg moon. Every one to three years, the Lent and egg moons would come too early. The clergy would have to tell people whether the moon was the Lent moon or a false one, which they may have called a "betrayer moon".

Visibly blue moon

The most literal meaning of blue moon is when the moon (not necessarily a full moon) appears to a casual observer to be unusually bluish, which is a rare event. The effect can be caused by smoke or dust particles in the atmosphere, as has happened after forest fires in Sweden and Canada in 1950 and, notably, after the eruption of Krakatoa in 1883, which caused the moon to appear blue for nearly two years. The particles in the atmosphere have to be about one micrometre in diameter; under these circumstances, long-wavelength light, which appears red to a viewer, is scattered out of the line of sight and short-wavelength light, which appears blue to a viewer, is selectively transmitted into a viewer's eyes.

Folklore

Historically, moons were given folk names, twelve each year, to help people to prepare for different times of the year and the related weather and crop needs. Names varied with locality and culture, often with descriptive names such as harvest moon, growing moon, snow moon, and egg moon. Most years have 12 moons (giving 12 names), but in the years with thirteen full moons the monthly "seasons" would be expected to come too early – for example, hens would not recommence laying their eggs by the fourth full moon since it was still too cold – so the early moon was named a "blue moon". This then re-aligned the rest of the year's moons and "seasons".

The origin of the term "blue moon" is steeped in folklore, and its meaning has changed and acquired new nuances over time. Some folktales say that when there is a full blue moon, the moon had a face and talked to those in its light.

According to Rainer Werner Fassbinder, "Every seventh year is one of the moon. In such years people suffer increasingly from emotional ups and downs and depression. Moon years such as 1978 are years that have 13 new moons. This inevitably leads to personal catastrophes."

Farmers' Almanac blue moons

In the 19th and early 20th centuries, the Maine Farmers' Almanac listed blue moon dates for farmers. These correspond to the third full moon in a quarter of the year when there were four full moons (normally a quarter year has three full moons). Names are given to each moon in a season: For example, the first moon of summer is called the early summer moon, the second is called the midsummer moon, and the last is called the late summer moon. When a season has four moons the third is called the blue moon so that the last can continue to be called the late moon.

The division of the year into quarters starts with the nominal vernal equinox on or around March 21. This is close to the astronomical season but follows the Christian computus used for calculations of Easter, which places each equinox evenly between the summer and winter solstices to calculate seasons rather than using the actual equinox.

Some naming conventions keep the moon's seasonal name for its entire cycle, from its appearance as a new moon through the full moon to the next new moon. In this convention a blue moon starts with a new moon and continues until the next new moon starts the late season moon.

To calculate the moon names for the seasons using the appearance of the new moon:

1. Locate the new moons that are nearest to the solstices and equinoxes. These are the early season moons. Mark the new moons as follows: nearest December 21 – the early winter moon; nearest March 20 – the early spring moon; nearest June 20 – the early summer moon; nearest September 22 – the early fall moon. Note: This makes the full moon of that season about two weeks later, always after the 20th or 21st of the month.
2. Locate the new moons following the early season moons marked above. Mark them as the mid season moons. For example, the new moon that follows the early winter moon is marked as the midwinter moon.
3. Locate the new moons before the early season moons marked in step 1. Mark them as the late season moons of the previous season. For example, the new moon that precedes the early winter moon is the late fall moon.
4. Locate all new moons that have not been marked either early, mid, or late moons. These are the blue moons.

Seasons are reversed in the southern hemisphere. Adjust the above instructions for your location.

For the year 2010, these are the dates of the moons in the northern hemisphere using UTC calculations. These dates use the actual solstices and not the artificial solstices that give each season an equal number of days.

1. 2009 December 16 - January 14 = Early Winter moon
2. January 15 - February 13 = Mid Winter moon
3. February 14 - March 14 = Late Winter moon
4. March 15 - April 13 = Early Spring moon
5. April 14 - May 13 = Mid Spring moon
6. May 14 - June 11 = Late Spring moon
7. June 12 - July 10 = Early Summer moon
8. July 11 - August 9 = Mid Summer moon
9. August 10 - September 7 = Late Summer moon
10. September 8 - October 6 = Early Fall moon
11. October 7 - November 5 = Mid Fall moon
12. November 6 - December 4 = Blue moon
13. December 5 - 2011 January 3 = Late Fall moon

Sky and Telescope calendrical misinterpretation

The March 1946 Sky and Telescope article "Once in a Blue Moon" by James Hugh Pruett misinterpreted the 1937 Maine Farmers' Almanac. "Seven times in 19 years there were — and still are — 13 full moons in a year. This gives 11 months with one full moon each and one with two. This second in a month, so I interpret it, was called Blue Moon." Widespread adoption of the definition of a "blue moon" as the second full moon in a month followed its use on the popular radio program StarDate on January 31, 1980.

Blue moons between 2009 and 2015

The following blue moons will occur between 2009 and 2015. These dates use UTC as the timezone; months will vary with different timezones.

Seasonal

Using the Farmers' Almanac definition of blue moon (meaning the third full moon in a season of four full moons), blue moons occur:

* November 21, 2010
* August 21, 2013

Calendar

Two full moons in one month:

* 2009: December 2, December 31 (Blue Moon on New Year's Eve)
* 2012: August 2, August 31
* 2015: July 2, July 31

Note that, unlike the astronomical seasonal definition, these dates are dependent on the Roman calendar and time zones. E.g. the full moon at 2009-12-31 19:13 UTC occurs early the next day in eastern countries (Australia and most of Asia), where the calendar blue moon will not occur until late January 2010.
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ref: w.w.w

Scrambled Eggs

The easiest and perhaps simplest and most delicious egg dish of all!
For one serving:
Melt 1 tablespoon butter in a medium size non-stick pan.
Break open 2 eggs into pan after butter has melted.
With a smooth spatula or wooden spoon, break open yolks and mix eggs around until eggs are cooked to how you like them!


Sunny Side Up or Over-Easy

For traditional sunny-side up eggs, melt 1 or 2 tablespoons of butter in a 8-inch non-stick omelet pan or skillet over medium heat. Break open eggs into pan and immediately reduce heat to low. Cook slowly until the whites are completely set and the yolks begins to thicken, but are not hard. For over easy-eggs flip over for 15 seconds. Serve eggs right away and enjoy!

"a French omelet great for breakfast, lunch, or dinner!"

Items needed: For each omelet: 3 eggs (just 2 eggs for a smaller omelet), 1 tablespoon milk, 1/4 cup shredded cheese, butter.

Mix eggs & milk with a fork until blended. In a non-stick omelet pan melt 1 tablespoon butter over medium-high heat, when butter stops foaming pour in eggs, swirling around pan to distribute evenly. Cook, lifting sides of omelet to let uncooked egg flow underneath, until almost set (about 1 minute), quickly sprinkle cheese over half of omelet. Fold plain side of omelet over cheese and cook for an additional 20 seconds. Serve at once. Salt & pepper to taste.


***Do not salt eggs before or during cooking. Salt can cause the eggs to become tough tough during cooking, so for best results salt eggs (if desired) only after cooking.

* 4 medium-sized potatoes - peeled and thinly sliced
* 6 eggs
* 1 onion
* chopped
* 1 green pepper - chopped
* 1/4 litre olive oil
* salt

Heat the oil in a large frying pan and then gently fry the sliced potatoes until almost soft, stirring from time to time so that they don't burn on the bottom of the pan. Add the onion and the green pepper and continue frying until all the vegetables are soft. Drain the vegetables in a colander to get rid of the excess oil.

Beat the eggs in a bowl and season with salt and pepper. Add the potatoes, etc. and mix well and check seasoning.

Heat a little oil in a frying pan on a moderate heat. Pour in the potatoes and eggs and shake the frying pan from time to time so that the omelette doesn't stick to the bottom. Once the bottom of the omelette has set, turn the heat down low and cover the pan.

After about ten minutes, turn the omelette by placing either a flat plate or saucepan lid on the frying pan and quickly turning over. Gently slide the omelette back into the frying pan and continue frying, once again shaking the pan from time to time so that it doesn't stick to the bottom, until it has set all the way through.


Tortilla de patatas (as this dish is known in Spain) is basically a potato omelette (about 4cm thick). It is popular all over Spain and often served in bars as a tapa and is eaten either hot or cold (GROSS!). Some people prefer to make it without the onions, because they have no guts.