Numbers 9:11
Such people are to observe it at twilight on the fourteenth day of the second month. They are to eat the lamb, together with unleavened bread and bitter herbs;
Berean Standard Bible
The fourteenth day of the second month at even they shall keep it, and eat it with unleavened bread and bitter herbs.
In the second month, on the fourteenth day at evening they shall keep it; they shall eat it with unleavened bread and bitter herbs.