eka-kāle vaiśākhera paurṇamāsī-dine
rātri-kāle mahāprabhu calilā udyāne
eka-kāle - once; vaiśākhera - of the month of Vaiśākha (April-May); paurṇamāsī-dine - on the full-moon night; rātri-kāle - at night; mahāprabhu - Śrī Caitanya Mahāprabhu; calilā - went; udyāne - to a garden.