Our solar system is structured such that it takes approximately 365 days for the Earth to orbit the Sun and approximately 28 days for the Moon to orbit the Earth. These two orbital paths are independent of one another. Twice a year, however, the paths intersect creating solar and lunar eclipses. For a short time, the Sun or Moon is overtaken by the darkness of one of the nodes. Rahu is the ascending point where the Moon’s orbit cuts through the Earth’s orbit. Ketu is the descending point. They are always opposite each other in the sky or birth chart, and the main force of karma and desire can be seen along its axis.
Mucalindasutta
Just then a great storm blew up out of season, bringing seven days of rain, cold winds, and clouds.
about Indra
“and the god who disturbs sages as they meditate because he fears self-realized human beings may become more powerful than him.”
Mucalinda, the dragon king(Ketu), came out from his abode, encircled the Buddha’s body with seven coils and spread his large hood(Rahu) over his head, thinking,
“May the Buddha not be hot or cold(Duality), nor be bothered by flies, mosquitoes, wind, sun(Soul), or reptiles.
When he knew the sky was clear, Mucalinda unwrapped his coils from the Buddha’s body. Hiding his own form, he manifested in the form of a brahmin youth(Mind?). He stood in front of the Buddha, venerating him with joined palms.
The divine in me, bow down to the divine in you.
Rahu, why did you suddenly release Suriya? Why have you come trembling, and why are you standing here terrified?
I have been spoken to by the Buddha in a stanza (requesting me to release Suriya). If I had not released Suriya my head would have split into seven pieces. While yet I live, I should have had no happiness. (Therefore I released Suriya).(SN 2.10)
In classical antiquity, the seven classical planets or seven luminaries are the seven moving astronomical objects in the sky visible to the naked eye: the Moon, Mercury, Venus, the Sun, Mars, Jupiter, and Saturn .
The misunderstanding of our true nature allows us to exist under the illusion that we are separate from the universal law of creation. According to Vedic wisdom, each planet is an expression of our own divine consciousness.
The nodes bring together Earth (body), Sun (soul) and Moon (mind)
How long was the longest solar eclipse?
7 minutes 31 seconds
The longest possible duration of totality is 7 minutes 31 seconds.
That’s why 7 coils of the tail of the Dragon(Ketu)
Ketu is an imaginary but powerful planet in Hindu astrology. It is the south node of the moon and mythological known as the “Tail of the Dragon”. It is always associated with mystery, spiritual detachment, liberation, crafty thinking etc. Apr 2019
The Enlightenment of Buddha
Dispassion for the world is happiness(Body)
But for one who has gone beyond sensual pleasures.
But dispelling the conceit ʻI am’(Spirit)
is truly the ultimate happiness.”(Mind)
(Mucalindasutta)
In the following suttas we can see stories of Node Rahu with sun. And of the Moon in SN 2.9(Eclipses)
https://www.accesstoinsight.org/tipitaka/sn/sn02/sn02.010.piya.html
Mucalindasutta
Therefore, Rahu and Ketu are respectively called the north and the south lunar nodes. That eclipses occur when the Sun and the Moon are at one of these points gives rise to the understanding of swallowing of the Sun and the Moon by the snake. Rahu is responsible for causing the Eclipse of the Sun