King James Version
In the fourteenth day of this month, at even, ye shall keep it in his appointed season: according to all the rites of it, and according to all the ceremonies thereof, shall ye keep it.New International Version
Celebrate it at the appointed time, at twilight on the fourteenth day of this month, in accordance with all its rules and regulations."Catholic Public Domain Version
on the fourteenth day of this month, in the evening, according to all of its ceremonies and justifications.