Calculate sunrise and sunset time

34 vues (au cours des 30 derniers jours)
JEREMIE
JEREMIE le 18 Juil 2012
Hi all,
I wish to know if it's possible to calculate sunrise and sunset time using one date/time and geographical position ? Maybe a toolbox already exists ?
Thanks,

Réponses (3)

JEREMIE
JEREMIE le 18 Juil 2012
toolbox suncycle.m seems to do that...
  1 commentaire
Star Strider
Star Strider le 18 Juil 2012
After I searched for and found that script, I discovered that Scripps Institute of Oceanography has a large collection of MATLAB files and toolboxes:

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Meysam Mahooti
Meysam Mahooti le 24 Sep 2019

Tobias Piechowiak
Tobias Piechowiak le 16 Sep 2015
Modifié(e) : Tobias Piechowiak le 16 Sep 2015
The connection between hour angle H, latitude phi and declination of sun delta is: cos(H) = -tan(phi)*tan(delta). delta can be approximated by: delta = sin(T)*23.5 where T is time from 21th, March or 23rd, September in days. Gives good enough results +- 20 min when you assume that H is 0 deg at noon.
Greetings

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