Sri Krishna Jayanti marks the celebration of the birth of Bhagavan Sri Krishna. Lord Sri Krishna was born on the 'Rohini' nakshatram (star) on Ashtami day. The festival Sri Krishna Jayanti is also known as Gokulashtami and Janmashtam. The actual day of celebration can be on two different days as the star 'Rohini' and Ashtami may not be on the same day. This occurs between August and September on the Christian calendar.According to traditional sources, the Janmashtami is observed on the day when the ashtami tithi occurs at midnight. If the ashtami tithi AND the Rohini nakshatra occur on the same day, then the observance is considered to be doubly sacred; otherwise the observance is held on the day on which the ashtami prevails at midnight. The vrata mainly consists of fasting, spending the whole night in the worship of Krishna, reciting hymns of praise and Krishna's pastimes, reciting prayers from the Bhagavata, offering arghya to Krishna, and the parana or the ceremonial breaking of the fast. The next day is celebrated as Krishna Jayanti.
Celebrations are held on a grand scale in all Krishna temples, especially the ones in Vrindavan, Mathura (Uttar Pradesh), Dvaraka (Gujarat), and other regionally famous temples.
