AMRIT VELA, is the time of about three and three quarters of an hour before sunrise, say from about 2.15 AM to 6AM. Guru Nanak urged his disciples to get up at this auspicious time and recite God's name. Literally it means the "period of divine nectar" In this period of calm and peace, one can easily meditate on God and receive the divine blessing. In the Japji,Guru Nanak emphasise, the need of rising early for prayer. Due to the change of season and geographical location, Amrit Vela is likely to differ in various countries.

References :

1. Encyclopedia of Sikh Religion and Culture, R.C.Dogra and Dr.G.S. Mansukhani 1995