Sometime

Sometime (UNKNOWN TIME): At a time in the future or the past which is not known or not stated.
Usage:
We really should meet sometime soon to discuss the details.

Excerpts from soaps, novels and films:
24
“Agent Pierce: We have been told to add an extra layer of security around your husband.
Sherry Palmer: Why?
Agent Pierce: We believe that there will be an attempt on his life sometime today.”