Explanation:
it is either the calendar or the plan ahead of just 24h.
that actually really depends on the circumstances.
but in general I would say for detailed planning and time management "plan ahead just 24h", because many things will change anyway from one day to the next, and then you wasted the time to create the plans just to change them again.
that does not change the fact that there are usually some high level milestones and appointments further out in the future we need to keep track of too.
