esa ghoratama vela
caranti yasyam bhutani
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
This particular time is most inauspicious because at this time the horrible-looking ghosts and constant companions of the lord of the ghosts are visible.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Kasyapa has already told his wife Diti to wait for a while, and now he warns her that failure to consider the particular time will result in punishment from the ghosts and evil spirits who move during this time, along with their master, Lord Rudra.