Q184. What is the life span of Brahma?

As mentioned in the verses (8.17-19), one day of Brahma lasts one thousand cycles of the four yugas. “One day of Brahma lasts one thousand cycles of four yugas [4.32 billion years]. The night is also of the same duration. At the start of Brahma’s day, all living beings become manifested from the un-manifest state. Then at night, all living beings become un-manifest again. This is repeated again, and again. At the beginning of each day of Brahma, all living beings are manifested, and at night, they are helplessly un-manifested." (Lord Krishna, Bhagavad-Gita 8.17-19) 1000 cycles of the four yugas is: 1000 x (1.728+1.296+0.864+0.432) = 100 x (4.32 Million) = 4320 Million = 4.32 Billion years One day (12 hours) of Brahma is 4.32 Billion Earth years, and he lives for 100 of his years, which is 311 trillion, 40 billion years for us. 4.32 Billion x 2 x 30 x 12 x 100 = 311 trillion, 40 billion years. Just think how fantastic the life of Brahma is compared to us, but even he must die one day, and he has already lived for 155.522 trillion years, this is his current age and half his long life is over. We live a very short life of at most 100 years and should realize that this material life is meant for spiritual realization and not material accumulation and attachments. We are working like donkeys to accumulate properties, and bank balances, but this is all a complete waste of life. If we don’t use our time, energy, and wealth in the service of Lord Krishna.