[O] Schedule more roughly

[Manuel Koell]

How can I schedule my todo's more roughly? Say, I know I want to do it next
week or in a few months but I don't know the exact date nor time to do it.
I just want a way to plan more foresighted. If the week starts or the month
I could always set a more accurate timestamp then. Any idea? I tried to
remove the day number in a timestamp but this would destroy the timestamp.