All 18 Chapters
Chapter 146 verses
Arjuna Viṣāda Yoga
अर्जुनविषादयोग
Chapter 272 verses
Sāṅkhya Yoga
साङ्ख्ययोग
Chapter 343 verses
Karma Yoga
कर्मयोग
Chapter 442 verses
Jñāna Karma Sannyāsa Yoga
ज्ञानकर्मसंन्यासयोग
Chapter 529 verses
Karma Sannyāsa Yoga
कर्मसंन्यासयोग
Chapter 647 verses
Dhyāna Yoga
ध्यानयोग
Chapter 730 verses
Jñāna Vijñāna Yoga
ज्ञानविज्ञानयोग
Chapter 828 verses
Akṣara Brahma Yoga
अक्षरब्रह्मयोग
Chapter 934 verses
Rāja Vidyā Rāja Guhya Yoga
राजविद्याराजगुह्ययोग
Chapter 1042 verses
Vibhūti Yoga
विभूतियोग
Chapter 1155 verses
Viśvarūpa Darśana Yoga
विश्वरूपदर्शनयोग
Chapter 1220 verses
Bhakti Yoga
भक्तियोग
Chapter 1335 verses
Kṣetra Kṣetrajña Vibhāga Yoga
क्षेत्रक्षेत्रज्ञविभागयोग
Chapter 1427 verses
Guṇatraya Vibhāga Yoga
गुणत्रयविभागयोग
Chapter 1520 verses
Puruṣottama Yoga
पुरुषोत्तमयोग
Chapter 1624 verses
Daivāsura Sampad Vibhāga Yoga
दैवासुरसम्पद्विभागयोग
Chapter 1728 verses
Śraddhātraya Vibhāga Yoga
श्रद्धात्रयविभागयोग
Chapter 1878 verses
Mokṣa Sannyāsa Yoga
मोक्षसंन्यासयोग
Chapter 8 – Akṣara Brahma Yoga
Verse 8.17
सहस्रयुगपर्यन्तमहर्यद्ब्रह्मणो विदु: । रात्रिं युगसहस्रान्तां तेऽहोरात्रविदो जना: ॥ १७ ॥
Transliteration
sahasra-yuga-paryantam ahar yad brahmaṇo viduḥ rātriṁ yuga-sahasrāntāṁ te ’ho-rātra-vido janāḥ
Synonyms (Word-for-Word)
sahasra — one thousand; yuga — millenniums; paryantam — including; ahaḥ — day; yat — that which; brahmaṇaḥ — of Brahmā; viduḥ — they know; rātrim — night; yuga — millenniums; sahasra-antām — similarly, ending after one thousand; te — they; ahaḥ-rātra — day and night; vidaḥ — who understand; janāḥ — people.
Translation
“By human calculation, a thousand ages taken together form the duration of Brahmā’s one day. And such also is the duration of his night.”
Purport
The duration of the material universe is limited. It is manifested in cycles of kalpas. A kalpa is a day of Brahmā, and one day of Brahmā consists of a thousand cycles of four yugas, or ages: Satya, Tretā, Dvāpara and Kali. The cycle of Satya is characterized by virtue, wisdom and religion, there being practically no ignorance and vice, and the yuga lasts 1,728,000 years. In the Tretā-yuga vice is introduced, and this yuga lasts 1,296,000 years. In the Dvāpara-yuga there is an even greater decline in virtue and religion, vice increasing, and this yuga lasts 864,000 years. And finally in Kali-yuga (the yuga we have now been experiencing over the past 5,000 years) there is an abundance of strife, ignorance, irreligion and vice, true virtue being practically nonexistent, and this yuga lasts 432,000 years. In Kali-yuga vice increases to such a point that at the termination of the yuga the Supreme Lord Himself appears as the Kalki avatāra, vanquishes the demons, saves His devotees, and commences another Satya-yuga. Then the process is set rolling again. These four yugas, rotating a thousand times, comprise one day of Brahmā, and the same number comprise one night. Brahmā lives one hundred of such “years” and then dies. These “hundred years” by earth calculations total to 311 trillion and 40 billion earth years. By these calculations the life of Brahmā seems fantastic and interminable, but from the viewpoint of eternity it is as brief as a lightning flash. In the Causal Ocean there are innumerable Brahmās rising and disappearing like bubbles in the Atlantic. Brahmā and his creation are all part of the material universe, and therefore they are in constant flux.
In the material universe not even Brahmā is free from the process of birth, old age, disease and death. Brahmā, however, is directly engaged in the service of the Supreme Lord in the management of this universe – therefore he at once attains liberation. Elevated sannyāsīs are promoted to Brahmā’s particular planet, Brahmaloka, which is the highest planet in the material universe and which survives all the heavenly planets in the upper strata of the planetary system, but in due course Brahmā and all the inhabitants of Brahmaloka are subject to death, according to the law of material nature.