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How can I determine or estimate when Aspect starts and ends #60

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jeferson-sb opened this issue Nov 7, 2022 · 3 comments
Open

How can I determine or estimate when Aspect starts and ends #60

jeferson-sb opened this issue Nov 7, 2022 · 3 comments

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@jeferson-sb
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jeferson-sb commented Nov 7, 2022

Hi folks,

I'm working on implementing a Transits chart and I need to list aspects for planets in a particular day.
I'm able to determine the aspect between two bodies with swe_calc_ut successfully but I cannot estimate how long that aspect will occur. So I need to represent the two dates where that aspect will stay, for example

Sun opposition Mars  ✔️
20 Oct - 01 Nov

I know there is the next_aspect_with method under the contrib module but it can only display the future dates of that same aspect.

@astrorigin

@jeferson-sb
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bump

@NodBr
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NodBr commented Apr 25, 2024

I may have an idea using to loops. For sake of simplicity, I will call:

  • D 0 is the day you're interested in
  • D 1, D 2, etc are the following days
  • D-1, D-2, etc are the previous days.

Start date:

  • Create a new chart with the date D-1;
  • Check If the aspect is still there;
  • If it's not, you know it started today;
  • If it's there, check D-2, D-3, etc

End date:

  • Do the same but going forward;
  • D 1, D 2, D 3, etc.
  • When it's not there anymore, you know it ended

Depending on your project, after knowing the date, you may go deeper to find the hour using the same idea

@jeferson-sb
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@NodBr Yeah, I did something similar to this in our project, thanks for the response anyways.

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