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  2. Lunar arithmetic - Wikipedia

    en.wikipedia.org/wiki/Lunar_arithmetic

    The lunar addition and multiplication operations satisfy the commutative and associative laws. The lunar multiplication distributes over the lunar addition. The digit 0 is the identity under lunar addition. No non-zero number has an inverse under lunar addition. The digit 9 is the identity under lunar multiplication.

  3. What to know about full moons in 2025: See the list of the ...

    www.aol.com/know-full-moons-2025-see-114604874.html

    Here are the 12 full moon dates of 2025, according to the Old Farmer's Almanac full moon calendar. January 13: Wolf Moon. February 12: Snow Moon. March 14: Worm Moon. April 12: Pink Moon. May 12 ...

  4. List of future astronomical events - Wikipedia

    en.wikipedia.org/wiki/List_of_future...

    There will be a rare full moon on a leap day; this event happens roughly once every century. [23] The next full moon on a leap day will not occur until February 29, 2124. [24] 2052 December 6 The closest supermoon of the century will occur. [25] 2053 August 29 A Total Penumbral Lunar Eclipse will occur, the first since 2006. [26] 2057

  5. Chisanbop - Wikipedia

    en.wikipedia.org/wiki/Chisanbop

    The Chisanbop system. When a finger is touching the table, it contributes its corresponding number to a total. Chisanbop or chisenbop (from Korean chi (ji) finger + sanpŏp (sanbeop) calculation [1] 지산법/指算法), sometimes called Fingermath, [2] is a finger counting method used to perform basic mathematical operations.

  6. What to know about full moons in 2024: When full moons are ...

    www.aol.com/news/know-full-moons-2024-full...

    Here's what you need to know about full moons in 2024: When are full moons in 2024? Here's you 2024 full moon calendar, according to The Old Farmer's Almanac: Jan. 25: Wolf Moon. Feb. 24: Snow ...

  7. Multiplication algorithm - Wikipedia

    en.wikipedia.org/wiki/Multiplication_algorithm

    A multiplication algorithm is an algorithm (or method) to multiply two numbers. Depending on the size of the numbers, different algorithms are more efficient than others. Numerous algorithms are known and there has been much research into the topic.

  8. When and where to see August's rare supermoon blue moon - AOL

    www.aol.com/where-see-augusts-rare-supermoon...

    The full moon in September will reach peak illumination on Tuesday, Sept. 17. It's known as the Harvest Moon. The full moon the following month, known as the Hunter's Moon, peaks on Thursday, Oct. 17.

  9. List of lunar eclipses in the 21st century - Wikipedia

    en.wikipedia.org/wiki/List_of_lunar_eclipses_in...

    There will be 230 lunar eclipses in the 21st century (2001–2100): 87 penumbral, 58 partial and 85 total. [1]Eclipses are listed in sets by lunar years, repeating every 12 months for each node.