Tactical

(with respect to a point in time (or space))

An adjective used to attach an expected delayed arrival to an otherwise precise date.

Alternatively also used to attach an expected imprecision to an otherwised fixed meeting place.

Gabi: "Let's meet at a tactical 12:15."

*Maja is on time, Rosi isn't*

Maja: "Where is Rosi?"

Gabi: "Don't blame him, we agreed on a tactical date."

Maja "Fair."