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bug#61460: 30.0.50; Calendar shows eclipse for quarter moon
From: |
Michael Heerdegen |
Subject: |
bug#61460: 30.0.50; Calendar shows eclipse for quarter moon |
Date: |
Tue, 14 Feb 2023 06:30:33 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) |
Ulrich Mueller <ulm@gentoo.org> writes:
> https://en.wikipedia.org/wiki/Argument_of_latitude
> | It is the sum of the more commonly used true anomaly and argument
> | of periapsis.
I did not find good discussions of the eclipse limits in the English
Wikipedia version; I found good explanations in German however:
https://de.wikipedia.org/wiki/Finsternis-Limit#Finsternis-Limite_bei_Sonnenfinsternissen
https://de.wikipedia.org/wiki/Finsterniszyklus
AFAIU you can indeed use similar values for lunar vs. solar eclipses.
But in the case of the moon, we are then including penumbral lunar
eclipses - in the total version see
https://en.wikipedia.org/wiki/Total_penumbral_lunar_eclipse
which are probably not really interesting (moon gets only a bit darker).
The limits for an eclipse to happen are not really constant, but taking
this into account is probably out of scope of the currently available
code in lunar.el.
Michael.
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, (continued)
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Michael Heerdegen, 2023/02/13
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Michael Heerdegen, 2023/02/13
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Ulrich Mueller, 2023/02/13
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Michael Heerdegen, 2023/02/13
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Michael Heerdegen, 2023/02/13
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Ulrich Mueller, 2023/02/13
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Michael Heerdegen, 2023/02/13
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Eli Zaretskii, 2023/02/13
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Ulrich Mueller, 2023/02/13
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Eli Zaretskii, 2023/02/13
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon,
Michael Heerdegen <=
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Ulrich Mueller, 2023/02/14
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Michael Heerdegen, 2023/02/14
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Ulrich Müller, 2023/02/14
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Michael Heerdegen, 2023/02/14
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Ulrich Müller, 2023/02/16
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Michael Heerdegen, 2023/02/17
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Ulrich Müller, 2023/02/17
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Michael Heerdegen, 2023/02/17
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Michael Heerdegen, 2023/02/18
- bug#61460: 30.0.50; Calendar shows eclipse for quarter moon, Ulrich Mueller, 2023/02/18