Rig-Veda Shloka:
द्वादशारं नहि तज्जराय वर्वर्ति चक्रं परि द्यामृतस्य । आ पुत्रा अग्ने मिथुनासो अत्र सप्त शतानि विंशतिश्च तस्थुः ॥

Essence: The twelve-spoked wheel of cosmic order turns around the heavens and never ages. On it stand 720 “sons” in pairs, read as 360 (12X30 Degrees) days and 360 nights.
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Artha-Veda Shloka:
यानि नक्षत्राणि दिव्यन्तरिक्षे अप्सु भूमौ यानि नगेषु दिक्षु । प्रकल्पयंश्चन्द्रमा यान्येति सर्वाणि ममैतानि शिवानि सन्तु ॥

Essence: The Nakshatras that are in the sky, the atmosphere, the waters, on the earth, the mountains, and in the directions, those through which the Moon travels, may all of these be auspicious to me.
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 Divine DeSigns 

“The word Jyotish is a combination of two Sanskrit roots: Jyoti (light, radiance, the luminous principle) and Isha (lord, ruler, or governing intelligence), yielding the meaning “Lord of Light” or “The Science of the Celestial Lights.” The name itself reveals the foundational orientation of this discipline: it is not a system built on speculation but one grounded in the observation of light and its various manifestations as they move through the heavens and interact with life on earth.”