Jesus' followers asked a similar question, as recorded in Acts 1: 6. Time and timing is the domain of the creator/father.
The universe is ruled with very successful laws. Jerusalem, ~ 2000 years ago was no exception, --stories of breaches of these laws, better defined now than then, such as walking on water, water turning into wine, cemeteries emptied, -- notwithstanding.
As written by Luke, Jesus was stating the obvious.