Which module for finding Equinoxes and Solstices

mldvx4 has asked for the wisdom of the Perl Monks concerning the following question:

I've been searching a bit and not finding the right module.

Which module should I be using to calculate summer and winter solstices, and autumn and spring equinoxes?

That is my main task at the moment, but if there is also a way to calculate Chinese New Year from the same or another module, that will help in a later task.

Comment on Which module for finding Equinoxes and Solstices

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Re: Which module for finding Equinoxes and Solstices by hippo (Archbishop) on Mar 05, 2021 at 11:39 UTC
I've been searching a bit and not finding the right module. You haven't said what search terms you used. I tried "solstice" and immediately found Astro::Montenbruck::SolEqu which seems to do what you require. 🦛	[reply]
Re: Which module for finding Equinoxes and Solstices by haukex (Archbishop) on Mar 05, 2021 at 16:17 UTC
I wrote some code here: Re: calculate length of day as function of space at onset of fall Update: ... which uses Astro::Utils's `calculate_equinox` and `calculate_solstice`.	[reply] [d/l] [select]