search

gopa810 / gaurabda-calendar

Python library for calculating panchanga calendar with vaisnava events.
MIT License
9 stars 5 forks source link

Database for Ephemerides? #2

Open ulisesguerrero opened 3 years ago

ulisesguerrero commented 3 years ago

Hare Kṛṣṇa prabhu,

Please accept my humble obeisances. All glories to Śrī Guru and Gaurāṅga!

Not very clear, is there a requirements for an ephemerides database like Sweph? Or how is the position of the Moon calculated?

gopa810 commented 3 years ago

Sun and Moon positions are calculated by Meeus algorithms. No ephemeries needed.

On 2020-12-14 15:25, ulisesguerrero wrote:

Hare Kṛṣṇa prabhu,

Please accept my humble obeisances. All glories to Śrī Guru and Gaurāṅga!

Not very clear, is there a requirements for an ephemerides database like Sweph? Or how is the position of the Moon calculated?

-- You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub [1], or unsubscribe [2].

Links:

[1] https://github.com/gopa810/gaurabda-calendar/issues/2 [2] https://github.com/notifications/unsubscribe-auth/ABZCGNRGXMIA2QJZDRQM7PDSUYN65ANCNFSM4U22IVBQ

ulisesguerrero commented 3 years ago

Nice. Thank you prabhu. How accurate are Meeus algorithms, how many years back can they be trusted?

gopa810 commented 3 years ago

It can be only estimated how accurate they are in the future, but the estimation for past and future range from -3000 to +3000 years.

The problem with accuracy is not simple topic, we have many variables there, including Dynamic time that is very non-periodic.

The best thing is the most demanding - to be always vigilant and aware of current astronomical observations.

On 2020-12-15 13:00, ulisesguerrero wrote:

Nice. Thank you prabhu. How accurate are Meeus algorithms, how many years back can they be trusted?

-- You are receiving this because you commented. Reply to this email directly, view it on GitHub [1], or unsubscribe [2].

Links:

[1] https://github.com/gopa810/gaurabda-calendar/issues/2#issuecomment-745243860 [2] https://github.com/notifications/unsubscribe-auth/ABZCGNROX7Q5KLCVXKOTSXDSU5FWNANCNFSM4U22IVBQ