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Your Moon Blue this Month, or Not?

05/28/2007 1:48 PM

Ever seen a blue moon? Well, if you are in "American longitudes", you do not have to wait long: it happens on Thursday May 31 at 9:04 p.m. Eastern Daylight Time (6:04 p.m. Pacific Daylight Time).

However, if you are in Europe, Africa, Asia or Australia, you will have to wait until Saturday June 30 to declare that the moon is "officially" blue.

To find out why, read this article on MSNBC.

-J

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Re: Your Moon Blue this Month, or Not?

05/29/2007 1:01 AM

(6:04 p.m. Pacific Daylight Time). I live in Sacramento CA and I am very curious as to the moon being blue when the sun is in it's full and hot time of the day (beginning to cool). I know that the moon can be seen during daylight hours but will the color blue actually be seen?

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Re: Your Moon Blue this Month, or Not?

05/29/2007 1:11 AM

Sorry after reading the article I understand -- after 64 years I have never seen a blue moon and was quite excited by having the opportunity.

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#3

Re: Your Moon Blue this Month, or Not?

05/29/2007 6:34 AM

Greetings,

Only for North American observers :-))

http://en.wikipedia.org/wiki/Blue_moon
http://www.obliquity.com/astro/blue2007.html

For the moment: full moon will occur at 01:04 Universal Time on 1 June, and again at 13:49 UT on 30 June (which is the 'blue moon' - the 2nd occurence of full moon within the same month).

http://aa.usno.navy.mil/data/docs/MoonPhase.html

Note that 'full moon' is absolute, occurs only at one moment per cycle! Whether you're able to see it or not depends, obviously, where you are and the weather at that location, which therefore defines the local time at that location, which, in this interesting case, defines whether you're seeing a blue moon or whether you need to wait a month.

In any case the moon does not change color due to the 'blue moon' timing.

The wiki article is interesting, I wasn't aware that our currently accepted definition is not the original one.

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