His worship is said to have been instituted by Numa who ordered that every one should mark the boundaries of his landed property by stones to be consecrated to Jupiter Terminalis, and at which every year sacrifices were to be offered at the festival of the Terminalia.

[2] On the festival the two owners of adjacent property crowned the statue with garlands and raised a crude altar, on which they offered up some corn, honeycombs, and wine, and sacrificed a lamb[3] or a suckling pig.

[4] The public festival in honour of this god was celebrated at the sixth milestone on the road towards Laurentum[5] doubtless because this was originally the extent of the Roman territory in that direction.

[6][7] When Cicero in a letter to Atticus[8] says, Accepi tuas litteras a. d. V. Terminalia (i.e. Feb. 19), he uses this mode of defining a date, because being then in Cilicia he did not know whether any intercalation had been inserted that year.

But the augurs had read into the flight patterns of birds that the god Terminus refused to be moved, which was taken as a sign of stability for the city.