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How does one calculate the number of full moons between two given dates d1 and d2 > d1. The date d3 of a full moon is also given.

Say, what is the number of full moons between: 15-Nov-1936 and 23-Oct-2017 or 21-Sep-1940 and 24-Jul-2021? Given that 15-Aug-2000 was a full moon day.

Ravi Sundaram
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  • I would do it using a table of full moon occurrences and just count. But taking the number of days in the time interval and dividing by 29.5 will give a pretty good estimate. – Arthur Nov 15 '19 at 11:28
  • Could we have a routine to do this easily, say as a library function in various computer languages (such as Python, C#, Swift, Go and so on)? Could WolframAlpha help? – Ravi Sundaram Jul 23 '20 at 08:04

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