A "great" kalpa is 4 medium kalpas, or around 1.344 trillion years. Brahma's one day equals 4.32 billion years which is a Kalpa. Further, a "medium" kalpa is roughly 336 billion years, the equivalent of 20 small kalpas. According to Buddhist tradition, each kalpa has 1,000 Buddhas. Thus a day of Brahma, Kalpa, is of duration&colon; 4.32 billion solar years. The "Vishnu Purana" narrates that in the present "kalpa" ("aeon"), Brahma wakes from his slumber. Discourses of Kalpa Sutra are given by monks. Another definition of Kalpa is the world where Buddhas are born. This Brahma's day, Kalpa is named as Shveta-Varaha Kalpa. A maha kalpa consists of four moments (kalpa), the first of which is creation. They grow in the Vedangas, such as the Shrauta Sutras and Kalpa Sutras. He is the seventh of the 14 manus of the current kalpa (aeon). The universe is then recreated from Vishnu all over again, starting a new "Kalpa". Within the current kalpa, there are four epochs that encompass the cycle. The last Kalpa at the end of the 50th year is called Padma Kalpa.