lunar equation

noun

Definition of lunar equation

: the correction of the epacts by +1 every 300 years 7 times in succession and then by +1 after the next 400 years made because of the error in the lunar cycle in relation to the Gregorian calendar — compare solar equation

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“Lunar equation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lunar%20equation. Accessed 25 Oct. 2020.

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